Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 426

JPBCS Articles

Breeding for dual purpose attributes in sorghum: Effect of harvest option and genotype on fodder and grain yields

April 2015

A study was conducted across different seasons during 2012 to 2013 to investigate the effect of harvest options and genotype on the dual fodder and grain yield in sorghum. The treatments were arranged in split–split plot design with the harvest options assigned to the main plot and the genotypes to the sub plot. The study revealed that performance of dual sorghum genotypes differed across harvest options and...

Author(s): Suad A. Hassan, Maarouf I. Mohammed and Samia O. Yagoub

Performance of farmers’ and improved varieties of barley for yield components and seed quality

April 2015

The objective of this study was to assess the performance of farmers’ and improved varieties of barley for yield and yield related traits and seed quality attribute in North Shewa Zone of Oromiya Region, Ethiopian. Seven farmer’s varieties (FVs) and three improved varieties (MVs) of barley were tested at three locations in Degem Wereda in randomized complete block design (RCBD) design with three replications...

Author(s): Girma Megersa, Firew Mekbib and Berhane Lakew

Crossability and germinability potentials of some cassava (Manihot esculenta Crantz) progenitors for selection

March 2015

Controlled crosses and selection of promising cassava genotypes were carried out at Cassava Breeding Programme of National Root Crops Research Institute (NRCRI), Umudike, Nigeria, in 2010. A 3 x 3 North Carolina mating design was used to generate nine F1 population. Out of 7,044 seeds expected from all the pollinated flowers, only 1,102 seeds (15.6%) were harvested. Majority of the pollinated flowers did not develop...

Author(s): Njoku, Damian Ndubuisi, Ikeogu, Ugochukwu Nathaniel, Ewa, Favour and Egesi, Chiedozie

Stability of resistance to cassava brown streak disease in major agro-ecologies of Uganda

March 2015

Cassava brown streak disease (CBSD) is the most devastating disease of cassava in southern,   eastern and cntral Africa, and can cause up to 100% yield loss. Limited progress has been made in breeding for host plant resistance due to limited knowledge on the resistance variability to the disease. Reaction of promising cassava genotypes to CBSD in multi-environments are also unknown. Therefore, this study...

Author(s): Anthony Pariyo, Yona Baguma, Titus Alicai, Robert Kawuki, Edward Kanju, Anton Bua, Christopher A. Omongo, Paul Gibson, David S. Osiru, Dennis Mpairwe and Phinehas Tukamuhabwa

Genotype by environment interaction of some faba bean genotypes under diverse broomrape environments of Tigray, Ethiopia

March 2015

Advanced breeding lines with acceptable resistance and tolerance levels to broomrape is an important way of decreasing yield loss. The objective of this research was to assess the yield stability of faba bean genotypes under diverse broomrape (Orobanche crenata) prone production environments. Six faba bean genotypes were tested across six environments. The AMMI analysis showed significant (P<0.01) genotype,...

Author(s): Teklay Abebe, Yemane Nega, Muez Mehari, Adhiena Mesele, Assefa Workineh and Hadas Beyene

Agro-morphological variability of shea populations (Vitellaria paradoxa CF Gaertn) in the Township of Bassila, Benin Republic

February 2015

Shea (Vitellaria paradoxa CF Gaertn) is a multipurpose forest tree species. This is one of the most integrated species in the cropping systems in the central and northern regions of Benin. It is also an important source of income for the population. Observations were made on some shea trees randomly selected in three vegetation types namely forests, fallows and farms. Data collection on quantitative and qualitative...

Author(s): SOUBEROU T. Kafilatou, AHOTON  E. Léonard, EZIN Vincent and SEKO H. Eliassou

Optimization of micropropagation protocol for three cotton varieties regenerated from apical shoot

February 2015

The need for alternative strategies to obtain transgenic cotton via apical shoot was necessitated due to the recalcitrance of cotton regeneration from somatic embryogenesis, this has greatly slowed down the development of transgenic cottons. To this effect, an optimized regeneration system from apical shoot was developed for three varieties of cotton. Ninety-five percent seed surface sterility was observed in seed...

Author(s): Afolabi-Balogun N. B., Inuwa H. M., Ume O., Bakare-Odunola M. T., Nok A. J. and Adebola P. A.

Morphological diversity and association of traits in ethiopian food barley (Hordeum vulgare l.) landraces in relation to regions of origin and altitudes

February 2015

One hundred and two barley accessions and five checks were evaluated using augmented design consisting of four complete blocks in 2012 main cropping season at holetta agricultural research center. Ten quantitative and six qualitative characters were recorded. Analysis of variance showed significant difference (p<0.01) among accessions for plant height, awn length, peduncle extrusion, thousand seed weight, number of...

Author(s): Bedasa Mekonnon, Berhane Lakew and Tadesse Dessalegn

Correlation, path coefficient analysis and heritability of grain yield components in pearl millet (Pennisetum glaucum (L.) R. Br.) parental lines

February 2015

Twenty four parental lines of pearl millet A/B pairs developed jointly by Lake Chad Research Institute (LCRI), Maiduguri and International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Kano during 1997 to 1999 were evaluated along with a seed parent (ZATIB) across five locations to determine yield and yield component relationships, heritability estimates as well as genetic advance. Correlation...

Author(s): Ezeaku I. E. Angarawai I. I., Aladele S. E. and Mohammed S. G.

Introgression of root protein and yield traits from backcross hybrids between cassava and its wild progenitor (Manihot esculenta ssp flabellifolia)

January 2015

Manihot esculenta spp flabellifolia is a potential progenitor for cassava root protein content and yield improvement. Storage roots of cassava landraces are low in protein content due to the fact that past breeding objectives concentrated mainly on yield and resistance to diseases. The improvement of cassava through its wild progenitor is of importance for the full utilization of the potential of the wild progenitor. An...

Author(s): Olalekan Akinbo, Maryke Tine Labuschagne and Martin Fregene

Correlation analysis for maize grain yield, other agronomic parameters and Striga affected traits under Striga infested/free environment

January 2015

Evaluation of 15 F1 hybrids and six parents obtained from partial diallel crosses was carried out during 2011 rainy season at Institute of Agricultural Research (IAR) Samaru, Zaria Striga infested field and Striga free field (2 environments). Interrelationships of grain yield and its components under Striga infestation revealed that character ear height had positive and highly significant phenotypic correlation with...

Author(s): J. Halidu, L. Abubakar, U. A. Izge, S. G. Ado, H. Yakubu and B. S. Haliru

Genetics of drought tolerance in common bean genotypes adapted to Ugandan conditions

January 2015

Common bean (Phaseolus vulgaris L.) is an important source of food and income for majority of households in Sub-Saharan Africa. However, bean production in Uganda is being affected by drought which has resulted from recent changes in climate. Developing high-yielding and drought-tolerant bean cultivars would significantly contribute to increased and stable yields in drought-prone environments. However, prior research...

Author(s): Winnyfred Amongi, Stanley Tamusange Nkalubo, Paul Gibson, Richard Edema and Mildred Ochwo-Ssemakula

Combining ability for yield and yield components in six parents and their 15 F1 hybrids of sesame (Sesamum indicum L.) in half diallel mating design

December 2014

Combining ability estimates were studied for seed yield, yield components and other morphological traits in six sesame parental lines and their 15 F1  hybrids crossed in half diallel for two consecutive seasons 2012/2013 - 2013/2014 at Gadaref University Farm, Gadaref, Sudan. Combining ability analysis revealed that both additive and non additive types of gene actions were important in the studied traits. For days...

Author(s): Salah Balla M. Ahmed and Shahira I. Adam

Genetic diversity and adaptation to different tillage and farming systems of cocoyam genotypes (Xanthosoma sagittifolium L. Schott) in the Eastern Region of Ghana

December 2014

Experiments conducted in Ghana show that cocoyam exists as mixtures of clones in farmers farms. This work aimed to use RAPD markers to determine the extent of diversity in cocoyam genotypes collected from farms at different locations in the Eastern region of Ghana. The study also investigated whether the genotypes have different adaptation to different farming systems (intercropping with plantain and sole cropping) and...

Author(s): Linda Arhin, Lemuel Ohemeng Mintah and Robert Impraim

Genetic diversity in Tepary bean (Phaseolus acutifolius) landraces grown in Botswana

December 2014

A field experiment was conducted at Department of Agricultural Research in Sebele in the 2012 to 2013 season using nine accessions that were sourced from the National Plant Genetic Resource Centre (NPGRC), Gaborone, Botswana. Multivariate statistical procedures such as clusters and principal component analysis were used on 15 selected characters to assess agro-morphological variability among tepary bean landraces...

Author(s): Molosiwa O. O., Kgokong S. B., Makwala B., Gwafila C. and Ramokapane M. G.

Genetic variation and heritability of yield and related traits in promising rice genotypes (Oryza sativa L.)

November 2014

A study was conducted during 2008 to 2009 in 12 environments in Nigeria, Benin Republic and Togo to evaluate genetic variation and heritability of yield and related traits in 48 rice genotypes. The experiments were laid out in a randomized complete block design (RCBD) with three replications. Genotypes differed significantly at p > 0.001 for all the traits studied, which implies that the genotypes contain adequate...

Author(s): S. A. Ogunbayo, M. Sié, D. K. Ojo, K. A. Sanni, M. G. Akinwale, B. Toulou, A. Shittu, E. O. Idehen, A. R. Popoola, I. O. Daniel and G. B. Gregorio

Management of major diseases and insect pests of onion and garlic: A comprehensive review

November 2014

Onion (Allium cepa L.) and garlic (Allium sativum L.) are the most important commercial crops grown all over the world and consumed in various forms. In India, onion and garlic have been under cultivation for the last 5000 years. It is generally used as vegetables, spices or as medicines. India ranks second to China in area and production in both onion and garlic, but ranks 102nd for onion and 74th for garlic in terms...

Author(s): R. K. Mishra, R. K. Jaiswal, D. Kumar, P. R. Saabale and A. Singh

Performance evaluation of indigenous Arabica coffee genotypes across different environments

November 2014

Evaluation of 30 Arabica coffee genotypes was carried out at four different locations in south-western Ethiopia to identify genotypes that exhibits stable performance across wide environments. The analyses of variances revealed that yield differences among genotypes were highly significant at all locations in both seasons except at Jimma during the second season. The interaction was also highly significant. Six...

Author(s): Yonas Belete, Bayetta Belachew and Chemeda Fininsa

Combining ability and heterosis for different agronomic traits in maize (Zea mays L.) under drought stress in the Sudan Savanna of Borno State, Nigeria

October 2014

Combining ability variances were estimated for grain yield and its related traits in maize (Zea mays L.). Nine maize varieties consisted of five IITA open pollinated varieties (OPVs) and four local varieties were crossed in line x tester mating design. During the 2007 cropping season to determine the general combining ability (GCA), specific combining ability (SCA) effects and heterosis. Parents and hybrids were...

Author(s): D. Aminu, M. A. Dawud and A. Modu

Evaluation of bean qualities of indigenous Arabica coffee genotypes across different environments

October 2014

Evaluation of bean qualities of 30 Arabica coffee genotypes were carried out at four different locations (South-western Ethiopia). The genotypes had high overall yield potential, during a preliminary evaluation carried out at Gera. The differences among genotypes for cherry weight (CW), bean weight, parchment length (PL), bean length (BL), floater beans and outturn percent at each location were highly significant (p...

Author(s): Yonas Belete, Bayetta Belachew and Chemeda Fininsa

Crop nutrition studies on grain filling and chalkiness in rice

October 2014

Rice grain chalkiness can reduce crop quality resulting in lower grades and returns. It is as a consequence of loose starch and protein particles packing during grain filling and maturation, and may due to nutritional, biochemical, physiological and environmental conditions particularly in varieties with high inheritable chalkiness. This study set out to evaluate the response to varying levels of nitrogen and potassium...

Author(s): Puran Bridgemohan and Ronell S. H. Bridgemohan

Genetic diversity studies for quantitative traits of tomato (Solanum lycopersicon L.) genotypes in Western Tigray, Northern Ethiopia

September 2014

The objective of the study was to estimate genetic diversity among tomato genotypes. Thirty-six genotypes introduced from different countries were evaluated at Humera Agricultural Research Center, Northern Ethiopia, during 2010/2011 in 6 × 6 simple lattice design with two replications. Cluster analysis was made by average linkage method. Mahalanobis distance (D2) was used to estimate the genetic distance between...

Author(s): Shushay Chernet, Derbew Belew and Fetien Abay

Efficient propagation of an endangered medicinal plant Jurinea dolomiaea Boiss in the North Western Himalaya using rhizome cuttings under ex situ conditions

September 2014

Jurinea dolomiaea is an important medicinal and aromatic plant species of Kashmir Himalaya. Due to its tremendous overexploitation the species has been listed as endangered for Himalayan region. In this study we carried out the propagation of J. dolomiaea using rhizome cuttings. Propagation through rhizome cuttings is a means towards conserving the species and making available planting material of this species for...

Author(s): Asma Banday, Irshad Ahmad Nawchoo, Zahoor Ahmad Kaloo, Peerzada Arshid Shabir and Ali Abbas Rather

Effects of yield components on yield potential of some lowland rice (Oyza sativa L.) in coastal region of Southern Nigeria

September 2014

The coastal region of Nigeria has abundant water naturally good for rice production, which is untapped due to oil exploration. The study was conducted to access the relationship between grain yield (GY) and its components of twenty-six segregating lines for the coastal region of Southern Nigeria. The experiment was conducted at the University of Port Harcourt teaching and Research Institution of Faculty of Agriculture...

Author(s): Andrew A. Efisue, Bianca C. Umunna and Joseph A. Orluchukwu

Response of transgenic Bt cowpea lines and their hybrids under field conditions

August 2014

Transgenic cowpeas are those genetically engineered with Cry1Ab gene for protection against the lepidopteran pest Maruca vitrata that could inflict upto 80% yield loss in severe infestation. Two transgenic events TCL-709 and TCL-711 were crossed to three non-transgenic lines IT97K-499-35, IT93K-693-2 and IT86D-1010 to generate six set of F1 hybrids. The study was designed and conducted to evaluate the performance of...

Author(s): Mohammed, B. S., Ishiyaku, M. F., Abdullahi, U. S. and Katung, M. D.

Analysis on combing ability and estimation of genetic parameters for chlorophyll content in maize

August 2014

Chlorophyll closely related to photosynthetic capacity and developmental stage in crops. In order to reveal the genetic characters of chlorophyll content in leaf above ear, ear leaf and leaf under ear (three-ear-leaves) of maize, ten inbred lines from five different heterotic groups were selected to make crosses by a completely diallel cross design. The combining ability analysis and genetic parameters estimations of...

Author(s): Haochuan Li, Jihua Tang, Yanmin Hu, Jiwei Yang and Zonghua Liu

Evaluation of highland maize (Zea mays L.) cultivars for polyethylene glycol (PEG) induced moisture stress tolerance at germination and seedling growth stages

July 2014

A laboratory experiment was performed at Ambo University, Department of Plant Sciences in March 2014, to evaluate the effect of moisture stress on germination and seedling growths of highland maize cultivars. The experiment was arranged factorially in completely randomized design with three replications. Five highland maize cultivars (Hora, Wenchi, Jibat, Argene and Wabi) were exposed to six levels of water stress (0,...

Author(s): Habtamu Ashagre, Melkamu Zeleke, Mesfin Mulugeta and Ermias Estifanos

Combining ability studies of pigeonpea cytoplasmic male sterile (CMS) lines with an obcordate leaf marker

July 2014

Hybrid pigeonpea [Cajanus cajan (L.) Millsp.] breeding technology based on cytoplasmic male sterile (CMS) was recently developed in India. A program was initiated to track the purity of female parental lines by incorporating an obcordate leaf shape marker in established male sterile A-lines. Seven obcordate A-lines developed by backcrossing and selection were crossed with four known fertility restorers in line x tester...

Author(s): S. B. Patil, A. J. Hingane, C. V. Sameerkumar, M. Myer, R. Vijaya Kumar and K. B. Saxena

Effect of initial stem nodal cutting strength on dry matter production and accumulation in cassava (Manihot esculenta Crantz)

June 2014

This study was done to determine the effect of initial node strength on dry matter yield of cassava. Studies were conducted at the Waterloo Research Campus, University of Trinidad and Tobago using the sets of Mexican variety (Mx) at 6 months with 1 to 3 nodes, 4 to 9 cm, and dry matter of 6 to 15 g/set. The crop was established at 60 × 80 cm and treated with a compound NPK fertilizer. Growth analysis (functional...

Author(s): Puran Bridgemohan and Ronell S. H. Bridgemohan

Successful boll development after ovary damage during emasculation of Upland cotton flowers

June 2014

Gossypium hirsutum flowers are easily emasculated by splitting the staminal column with the fingernail and removing the corolla and androecium. However, any damage to the ovary is considered detrimental to successful boll formation and damaged flowers are typically discarded.  This study evaluated boll retention after different emasculation treatments. Removal of the membrane surrounding the ovary reduces boll...

Author(s): John E. Erpelding, Salliana R. Stetina and Rickie B. Turley

Genetics of yield and some yield contributing traits in Upland cotton (Gossypium hirsutum L.)

May 2014

Inheritance, general combining ability and specific combining ability were studied using four parents: FH-901, NIAB-Karishma, CIM-496 and MS-84 for different plant traits in Upland cotton (Gossypium hirsutum L.). Mean values of all genotypes were significantly different from each other for all the traits studied. Epistasis was not found to be involved in any of the traits. The inheritance of all the traits was...

Author(s): Amir Latif, Tanweer Ahmad, Sikandar Hayat, Ghulam Sarwar, M. Zahid Ehsan, Muzaffar Raza, Muhammad Sarwer and Iftikhar Ahmad Khan

Use of biplot approach for genetic analysis of yield and related traits in cotton (Gossypiumbarbadense)

April 2014

Combining ability is an important genetic attributes to cotton breeders in anticipated improvement via hybridization and selection. Seven parents were involved in a half diallel mating design which was analyzed by genotype × environment interaction (GGE) biplot graphical method. General combining ability (GCA) and specific combining ability (SCA) effects were significant for all traits. None of the parents were...

Author(s): H. M. E. Hamoud

Reliability and comparison of the polymorphism revealed in amaranth by amplified fragment length polymorphisms (AFLPs) and inters simple sequence repeats (ISSRs)

April 2014

The present study reported the effectiveness of two PCR-based molecular techniques, inters simple sequence repeats (ISSRs) and amplified fragment length polymorphisms (AFLPs), for genetic assessment of amaranth. The polymorphic loci ranged from 110 among A. caudatus to 228 among A. cruentus and 16 among A. tricolor to 56 among A. hypochondriacus for AFLP primer combinations and ISSR primers, respectively. Among the two...

Author(s): Oduwaye, O. A., Baránek, M. ÄŒechová, J. and Raddová, J.

Genotype-environment interaction and correlation of some stability parameters of total starch yield in potato in Amhara region, Ethiopia

March 2014

This study was carried out to assess the nature and magnitude of genotype-environment interaction (GEI) and the correlation among some stability parameters. Eleven potato genotypes were evaluated during 2011 rainfed season at three locations with Randomized Complete Block design with three replications in Amhara region. Combined analysis of variance indicated that the main effect due to location, genotype and genotype...

Author(s): Gedif, Mulugeta, Yigzaw, Dessalegn and Tsige, Genet

Combining ability for beta-carotene and important quantitative traits in a cassava f1 population

February 2014

 Cassava is ideal for biofortification due to its popularity as a root staple among populations with high vitamin A malnutrition. The crop is vegetatively propagated and retains the enhanced trait across generations. The combining ability for beta-carotene content and important yield trait was evaluated in a cassava F1 generation. Ten high beta-carotene clones from International Institute of Tropical Agriculture...

Author(s): Njenga, Peninah, Edema, Richard and Kamau, Joseph

Evaluation of various fungicides and soil solarization practices for the management of common bean anthracnose (Colletotrichum lindemuthianum) and seed yield and loss in Hararghe Highlands of Ethiopia

January 2014

The study was undertaken to evaluate the effect of integrated management of bean anthracnose through soil solarization and various fungicides applications on epidemics of the disease and to determine the effect of integrated management of bean anthracnose on seed yield and loss of common bean variety Mexican-142. Field experiments were conducted at Haramaya and Hirna in 2010 main cropping season of Ethiopia. Soil...

Author(s): Mohammed Amin, Ayalew Amare and Thangavel Selvaraj

Inheritance of stem diameter and its relationship to heat and drought tolerance in wheat (Triticum aestivum L.)

January 2014

Genetic control of stem diameter and other stem attributes of wheat in relation to yield components were analyzed in a 7- parent F1 diallel cross in favorable, drought and drought combined heat environments, as well as in 12 F2 populations under heat stress. Polygenes with mainly additive effects were involved in the control of stem diameter which segregated in normal distributions in the F2. The narrow-sense...

Author(s): Ahmed Sallam, El-Sayed Hamed, Mervat  Hashad and Mohamed  Omara

Farmer and consumer preferences for rice in the Ashanti region of Ghana: Implications for rice breeding in West Africa

December 2013

Rice has become an important staple in Ghana in recent years but most consumption is met by imports. In this study, farmers’ preferences for rice varietal traits especially grain quality and the relationship of grain quality with consumer acceptability of locally produced rice was investigated in the Ashanti region of Ghana. Both formal and informal survey approaches were employed to collect data. The farmers...

Author(s): Maxwell Darko Asante, Bright Owusu Asante, George Kwasi Acheampong, Samuel Kwame Offei, Vernon Gracen, Hans Adu-Dapaah and Eric Yirenkyi Danquah

Effect of African rice gall midge on yield and its components on inter-specific rice progenies, using correlation and principal components as analysis tools

November 2013

Inter-specific rice progeny lines (Oryza glaberrima × Oryza sativa) were evaluated for African rice gall midge resistance at two locations in 2010 cropping season. The experiment was made of 16 rice progeny lines including the two parents; FARO52 and Tog 7442 and a known susceptible check FARO 37. The experiment was conducted in the lowland experimental fields of National Cereals Research Institute at Badeggi and...

Author(s): M. Bashir, A. T. Maji and A. S. Gana

Standardization of seed dormancy breaking treatment in Senna (Cassia auriculata)

November 2013

The study conducted to standardize the seed dormancy breaking treatment in senna (Cassia auriculata) revealed that soaking the seeds in hot water (boiled to 100°C and removed from the flame) for 15 min and soaking with 100 ppm GA3 for 3 h had effectively improved the germination (98%), root length (7.2 cm), shoot length (9.5 cm), dry matter production (0.258 g per ten seedlings) and vigour index (1637) compared to...

Author(s): Ameer Junaithal Begum M., Vijayakumar A. and Selvaraju P.

Studies on variability and heritability for different quantitative characters in fenugreek under different environments

November 2013

Thirty diverse genotypes of fenugreek were grown in six (E1 to E6) environments during the winter seasons at the Agriculture Farm of Visva-Bharati University, India. The estimates of genotypic and phenotypic coefficients (GCV and PCV) variation in all the environments were moderate for plant height and test weight, and high for branch number, pod number, husk weight, stem weight and seed yield indicating little...

Author(s): P. C. Kole and A. Saha

Performance of single cross quality protein maize hybrids evaluated at Samaru-northern guinea savanna zone of Nigeria

November 2013

Diallel mating design was used to generate fifteen single cross hybrids including fifteen reciprocals. The hybrids were evaluated together with their parents and thirteen checks at Samaru, Northern Guinea Savannah, of Nigeria in the years 2005 and 2006. The experimental design used was 7 x 7 incomplete lattice designs with three replications. There were significant differences between the various genotypes for all the...

Author(s): M. Yusuf

GGE biplots to analyze soybean multi-environment yield trial data in north Western Ethiopia

November 2013

The study was undertaken with the objective to examine the nature and to quantify the magnitude of genotype x environment interaction effects on soybean [Glycine max (L.) Merr.] grain yield and to determine the winning genotype (s) for test environments in north western Ethiopia. The experiment was executed at four different locations of Ethiopia for two consecutive years (2007 and 2008) using thirty two genotypes...

Author(s): Mulugeta Atnaf, Sisay Kidane, Seltene Abadi and Zelalem Fisha

Yield stability in common bean genotypes (Phaseolus vulgaris L.) in the Sudan

October 2013

Common bean is an important food legume crop in Sudan. Drought and heat stress are considered the main factors responsible for low productivity. Nine common bean genotypes were evaluated for yield stability under different sowing dates and watering regimes in three field experiments conducted in the River Nile State-Sudan during 2003 to 2006. 10 test- environments were thus achieved, representing the combined effect of...

Author(s): Gamal E. Khalifa, Ali E. Eljack, Maarouf I. Mohammed, Osman M. Elamin and Elsadig S. Mohamed

Segregation analysis of cry7Aa1 gene in F1 progenies of transgenic and non-transgenic sweetpotato crosses

October 2013

Sweetpotato weevils are the most devastating pests of sweetpotato causing yield losses ranging from 60 to 100%. Their cryptic nature, where the larvae is found within plant tissues render them difficult to manage especially using chemicals control. Development of weevil resistant sweetpotato was conducted by crossing a transgenic event CIP410008.7 as a female parent with three Ugandan cultivars as male parents. Crossing...

Author(s): Rukarwa R. J., Mukasa S. B., Sefasi A., Ssemakula G., Mwanga R. O. M. and Ghislain M.

Genotype X environment interaction of maize (Zea mays L.) across North Western Ethiopia

September 2013

  A study was conducted at Northwestern Ethiopia, during 2010 main cropping season. Fifteen maize genotypes were evaluated at four locations that differ in soil type, altitude and mean annual rainfall. The experiment was laid out in a randomized complete block design with three replications. Stability parameters that are useful tools for identification of genotypes with specific and wide...

Author(s): Workie Anley, Habtamu Zeleke and Yigzaw Dessalegn

Genotype x environment interaction and yield stability estimate of some sweet potato [Ipomoea batatas (L.) Lam] breeding lines in South Africa

September 2013

    Genotype x environment interaction and yield stability was evaluated for root yield for 28 sweetpotato breeding lines in South Africa using the Additive Main Effects and Multiplicative Interaction (AMMI) stability parameter. Genotype x environment interactions showed the inconsistency of the performance of the breeding lines over environments and seasons. The analysis of...

Author(s): Adebola P. O., Abe Shegro, S. M. Laurie, L. N. Zulu and M. Pillay

Kernel quality and morphological traits of scented rice (cv. Super Basmati) in relation to irrigation and zinc application

September 2013

    Two year field study was conducted at Adaptive Research Farms Sheikhupura and Sargodha with the objective to investigate the impact of irrigation water and zinc application on kernel quality and morphological traits of scented rice, and genotype Super Basmati was selected for this study. Results indicated that increasing applications of irrigation and zinc has positive...

Author(s): Zuhair Hasnain and Hakoomat Ali

Combining ability and mode of gene action in cassava for resistance to cassava green mite and cassava mealy bug in Malawi

September 2013

The need to develop new improved varieties resistant to cassava green mite (CGM) and cassava mealy bug (CMB) as well as high yielding varieties requires knowledge on the mode of gene action controlling the expression of resistant traits to these pests.  Therefore, a study was carried out to determine combining abilities and mode of gene action for resistance to CGM and CMB by crossing cassava genotypes in a 7...

Author(s): Michael Malandula Chipeta, James M. Bokosi, Vincent W. Saka and Ibrahim R. M. Benesi  

Integrated nutrient management in winter maize (Zea mays L.) sown at different dates

September 2013

  A field experiment was conducted during rabi season of 2006 to 2007 and 2007 to 2008 to study the effect of sowing dates and integrated nutrient management on growth, yield and quality of winter maize. The trial was laid out in split plot design with three replications, assigning total 27 treatment combinations i.e. three sowing dates (15 October, 25 October and 5 November) in main plots and three levels...

Author(s): Neeraj Kumar Verma

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