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: 416

JPBCS Articles

Performance of drought tolerant three-way and top cross maize hybrids in Sudan Savanna of North Eastern Nigeria

October 2011

Field experiments were conducted during the 2008 cropping season in two locations in Lokodisa, Gwoza Local Government Area and Sabongari in Damboa Local Government Area both in Borno State Nigeria. These two locations are both located within the Sudan Savanna agro-ecology of north-eastern Nigeria and the soil of the area is clay loam and are well drained. The study was conducted in order to evaluate the performance of...

Author(s): A. U. Izge and I. Y. Dugje

In vitro explants regeneration of the grape ‘Wink’ (Vitis vinifera L. ‘Wink’)

October 2011

  The effects of different hormones and their concentration combinations, different explant types, dark periods, on the regeneration of the grape ‘Wink’ was investigated using in vitro leaves, petioles, internodes and radicles. The results showed that of all the media prepared, the explants on following media produced the highest regeneration rate: 78.74±1.60% of the leave explants...

Author(s): Ping Zhang, Zhi-Ying Yu, Zong-Ming Cheng, Zhen Zhang and Jian-Min Tao

Assessment for drought adaptive and reproductive traits of field-planted upland rice genotypes in a derived savannah ecology

October 2011

  A field study was conducted in derived savannah ecology to evaluate sixteen upland rice genotypes comprising breeding lines, recent releases and established cultivars for the effect of different rainfall-seasons on genotypic trait expression and to identify those harbouring drought adaptive characters. Plantings were done in the early and late rain seasons of 2006 and 2007, respectively. Data were collected...

Author(s): Adewusi, K. M. and Nassir, A. L

Floral biology of Bambara groundnut [Vigna subterranea (L.) Verdc]

October 2011

  Investigation on floral biology of twelve accessions of Bambara groundnut [Vigna subterranea (L.) Verdc] was carried out in the greenhouse of the School of Agriculture and Agricultural Technology, Federal University of Technology, Owerri, Nigeria, in a completely randomized design with three replications. Significant varietal differences (P<0.05) were observed among the accessions in all...

Author(s): N. C. Onwubiko, M. I. Uguru, A. A. Ngwuta, E. T. Inyang and O. J. Nnajiemere

Bio-economic assessment of chemical and non-chemical weed management strategies in dry seeded fine rice (Oryza sativa L.)

October 2011

  Dry seeding of rice offers potential to be opted as a resource conservation technology but its sustainability is endangered by heavy weed infestation. Experiments were conducted during summer season of 2009 to look for effective and economically viable weed control method(s) in dry seeded rice. Four mulching materials of natural origin as sorghum, sunflower and wheat residues each soil incorporated at 8 t...

Author(s): Abdul Khaliq, Muhammad Yasir Riaz and Amar Matloob

The effect of different nutrient solutions on some growth indices of greenhouse cucumber in soilless culture

October 2011

  Today, greenhouse cultivation of vegetables, especially cucumber in soilless culture has been developed in different parts of the world. Soilless culture creates the possibility that farmers in a shorter time with less effort produce more yield. This research was done in the greenhouses center in Islamic Azad University of Khorasgan with three kinds of nutrient solutions and so completely randomized...

Author(s): Ahmad Mohammadi Ghehsareh, Samira Khosravan and Ali Asghar Shahabi

Genetic diversity and inbreeder specie of Andrographis paniculata (Burm. f.) Nees by randomly amplified polymorphic deoxyribonucleic acid (RAPD) and floral architecture analysis

October 2011

  “Fha-Tha-Laai-Joan” (Andrographis paniculata (Burm. f.) Nees) is a medicinal plant that is, widely used in Thailand and some other countries for therapeutic value, but the lack of their genetic information may cause confusion in its utilization. The randomly amplified polymorphic DNA (RAPD) markers were used to identify and elucidate the phylogenetic relationships among 58 accessions...

Author(s): Parwat Wijarat, Vichien Keeratinijakal, Theerayut Toojinda, Apichart Vanavichit, and Somvong Tragoonrung

Heterosis and combining ability analysis in bread wheat (Triticum aestivum L.)

September 2011

  Heterosis and combining ability analysis were studied in a 7 × 7 diallel set of bread wheat. Analysis of variance (ANOVA) revealed the presence of significant variance due to general combining ability (GCA) among the parents for all the traits, and due to specific combining ability (SCA) among the crosses for the all the traits except for number of tillers per plant, plant height and number of spikelets...

Author(s): Ashutosh Kumar, V. K. Mishra, R. P. Vyas and V. Singh

Evaluation of antifungal and antioxidative potential of hydrolytic products of glucosinolates from some members of Brassicaceae family

September 2011

  The primary aim of the present study was to evaluate antioxidative and antifungal potential of hydrolytic products of glucosinolates. These two bioactivities were assessed in the seeds of the rocket salad, Indian rape, cabbage, cauliflower, knol-knol and radish using DPPH and disc diffusion assays. Alternaria alternata was used as test pathogen in disc diffusion assay. The antioxidative and...

Author(s): Ramandeep Kaur, Geetanjali Rampal and Adarsh Pal Vig

Biochemical and molecular characterization of submergence tolerance in rice for crop improvement

September 2011

  Submergence stress is considered as the third most important limitation of rice production contributing to its low productivity in lowland and rainfed ecosystem. Characterization of genotypes and using them in breeding programme is likely the best option to withstand submergence and stabilize productivity in these environments. However, progress in genotypes characterization has been slow but can...

Author(s): Bishun D. Prasad, Ganesh Thapa, Samindra Baishya and Sangita Sahni

Combing the monogenic and polygenic resistant genes to late blight in tomato

September 2011

    Late blight is a serious disease affecting tomato production especially in tropical and subtropical regions. Twenty-five crosses were generated from ten diverse parents to combine both the horizontal and vertical late blight resistance genes of late blight. Five inbred lines with polygenic resistance genes derived from interspecific cross Solanum lycopersicum x S....

Author(s): Elsayed A. Y., da Silva Henriques D., Mizubuti E. S. G. and Carneiro C. P.

Bioassay study of fenugreek extract’s allelopathic effects on the germination and growth of several crops and weeds

September 2011

  In order to study the extract effect of different parts of fenugreek (Trigonella foenum-graceum L. (on germination of several crops and weeds, an experiment was conducted with completely randomized factorial design and 3 replications, in the laboratory of Faculty of Agriculture, Ferdowsi University of Mashhad, during 2010. The following four species were included: soybean (Glysin max), sesame (Sesamus...

Author(s): Golsoomeh Azizi, Maryam Jahani Kondori, Asieh Siah-Marguee and LeilaAlimoradi

Quantitative genetic analysis of flowering time, leaf number and photoperiod sensitivity in maize (Zea mays L.)

September 2011

  Photoperiod sensitivity is a major difficulty of broadening the resources of breeding germplasms and widening the planting area of varieties in maize. The objective of this study was to dissect the quantitative genetic control of days to pollen shed (DPS), days to silking (DS), anthesis-silking interval (ASI), LNB (the leaf number below the top ear), LN (the total leaf number), and photoperiod sensitivity...

Author(s): Xiaobo Zhang, Bin Tang, Wenke Liang, Yonglian Zheng and Fazhan Qiu

In-vitro culture of Hevea brasiliensis (rubber tree) embryo

September 2011

  In the time past, grafting buds from selected clones on seedlings or plants from seed orchards were used traditionally to propagate rubber trees. Selected seeds were frequently used because their level of resistance to diseases is known. Micro-propagation of rubber tree was the method used in the propagation of Hevea brasiliensis in this experiment, which is an approach different from the...

Author(s): Ighere Dickson A, Anthony Okere, Jammadine Elizabeth, Olayode Mary, Fajimi Olatunde and Sunday Abiodun

Analysis of variabilities in populations of Nardostachys jatamansi DC. in Garhwal Himalaya, India

September 2011

  Nardostachys jatamansi DC. is an endangered medicinal and aromatic plant species. Considering the status and importance, there is an urgent need of its conservation, cultivation and crop improvement. Variability studies may serve as an important tool for effective conservation and crop improvement program. Therefore, germplasm was collected from different natural population and transplanted in...

Author(s): R.S. Chauhan, M. C. Nautiyal and Arun Kumar

Amylopectin molecular structure and functional properties of starch from three Ugandan cassava varieties

September 2011

  Amylopectin molecular structure is a very important determinant of starch functional properties. The main purpose of this study was to determine the strength of the relationship between the amylopectin structure of starches from cassava varieties and their functional properties. TME14 had the highest (46.63%) proportion of A chains while Bamunanika had the lowest 42.27%. Bamunanika had the highest (23.33%)...

Author(s):   Mufumbo Raphael, Baguma Yona, Kashub Stephen, Nuwamanya Ephraim,Rubaihayo Patrick, Mukasa Settumba, Hamaker Bruce and Kyamanywa Samuel

Genetic variability, stability and relationship among some Cowpea, Vigna unguiculata (L.) Walp breeding lines

September 2011

  The contribution of cowpea to food security in the sub-Sahara Africa is incontestably obvious. Ten genotypes of cowpea were evaluated in different environments to assess their variability and stability. The genotypes differed significantly (P≤0.05) with respect to all the eight phenotypic traits studied. Days from planting to first flower production and to first ripe pod showed the least coefficient of...

Author(s): Adeigbe, O. O., Adewale, B. D. and Fawole, I. O.

Genetic evidence of developmental components of parthenocarpy in Apomictic Musa species

August 2011

  Apomixis and parthenocarpy are broadly botanically defined as embryo and seed, and fruit development respectively, in the absence of fertilization. The objectives of this study were to genetically elucidate the development of apomictic seed and parthenocarpic fruit development in Musa. Borneo and Calcutta 4 plants were vegetatively propagated and were assayed in replicates of 2 and 6, respectively at...

Author(s): Okoro, P., Shaibu, A. A.,, Ude, G., Olukolu, B. A., Ingelbrecht, I, Tenkouano, A., Ogburia, M. N., Moonan, F., and Dimkpa, C.

Management of inherent soil fertility of newly opened wetland rice field for sustainable rice farming in Indonesia

August 2011

  Study on management of inherent soil fertility of newly opened wetland rice for sustainable rice farming in Indonesia was conducted in Bulungan District, from 2009 to 2010. The aims were to know the soil fertility status and properly manage its fertility status to improve rice yield and sustain rice farming. Six treatments were imposed including T0: farmers practices, T1: farmer practices + compost +...

Author(s):   Sukristiyonubowo, Ibrahim Adamy Sipahutar, Tagus Vadari and Agus Sofyan  

Segregation of selected agronomic traits in six S1 cassava families

August 2011

  Inbreeding of predominantly cross-pollinating crops is expected to result in the generation of progeny with reduced fitness and/or progeny with improved phenotypes. However, this effect is not well documented in cassava (Manihot esculenta Crantz). In this study, S1 progeny from six cassava genotypes (I92/00067, TMS 30572, 95/SE-00036, NASE 4, MH95/0469 and Bamunanika) were examined for...

Author(s): Kawuki, R. S., Nuwamanya E., Labuschagne, M. T.,  Herselman L. and Ferguson M. E.

Plant architecture and its responses to high planting density and low fertilizer of reduced culm number mutants in rice (Oryza sativa L.)

July 2011

  Plant architecture is of major agronomic importance as it determines the potential grain yield depending on environmental conditions in rice (Oryza sativa L.). Here, we characterized plant architecture and its response to low fertilizer and high planting density in five rice “reduced culm number (rcn)” mutants; “rcn1-2, rcn2, rcn4-2, rcn5and rcn6”, originating...

Author(s): Mojith Ariyaratna, Itsuro Takamure and Kiyoaki Kato

A breeding scheme for local adoption of cassava (Manihot esculenta Crantz)

July 2011

  In many rural communities, cassava mosaic disease (CMD) resistant varieties are being rejected by farmers owing to their inferior root qualities when compared to locally adapted varieties. In response to this challenge, we implemented a breeding scheme whose objective was to combine CMD resistance with farmer preferred root qualities, whose genes were respectively sourced for elite and local varieties. We...

Author(s): Kawuki R. S., Pariyo A., Amuge T., Nuwamanya E., Ssemakula G., Tumwesigye S., Bua A., Baguma Y., Omongo C., Alicai T. and Orone J.

Reactions of traditional upland and aerobic rice genotypes to rice root knot nematode (Meloidogyne graminicola)

July 2011

  Aerobic rice cultivation is an efficient water saving strategy which maintains a significantly higher yield than traditional upland varieties. The upland rice in South East Asia is largely affected by parasitic rice root knot nematode, Meloidogyne graminicolacausing severe yield losses. In the present investigation 14 widely cultivated traditional upland varieties and 45 breeding genotypes improved for...

Author(s):   Kuntal Das, , Dule Zhao, Dirk De Waele, Raj Kumar Singh Tiwari,Dhirendra Kumar Shrivastava and Arvind Kumar

Development of new early maturing and high yielding bread wheat lines for growing in newly reclaimed desert areas of Egypt

June 2011

  Conventional wheat breeding programs aim at developing high yielding cultivars suitable for sowing under stress conditions and poor soils especially in newly reclaimed deserts.  The objective of the current study was to develop high yielding and early maturing bread wheat (Triticum aestivum L.) lines adapted to grow in old and new reclaimed desert soils of Egypt.  Expressed Sequence Tags...

Author(s): Kamal A. Khieralla, Adel M. Mahmoud and Talaat A. Ahmed,

Activities of sucrose-metabolizing enzymes in grains of two wheat (Triticum aestivum L.) cultivars subjected to water stress during grain filling

June 2011

  Developmental changes in the starch and soluble sugars content of grains and the activities of sucrose metabolism enzymes in drought-tolerant (Triticum aestivum L. cv. Zagros) and drought-sensitive with high yielding potential under favorable conditions (cv. Marvdasht) wheat genotypes were investigated under controlled water deficit during grain filling. The two cultivars were grown in pots under...

Author(s): S. Saeedipour

Assessing phenotypic diversity of interspecific rice varieties using agro-morphological characterization

May 2011

  The aim of this study is to identify the phenotypic variability of 60 lowland NERICA varieties and 18 promising lines for better management of their genetic inheritance. The experimental design used was an augmented randomized complete block. Data on 23 agro-morphological traits were collected and analyzed. The analysis of variance showed highly significant differences (P<0.0001) between the variables and...

Author(s): Y. D.  Moukoumbi, M.  Sié, R. Vodouhe, B.  N’dri, B. Toulou, S. A.  Ogunbayo and A. Ahanchede

Diversity of Myanmar cowpea accessions through seed storage polypeptides and its cross compatibility with the subgenus Ceratotropis

May 2011

  This study was conducted to detect the genetic diversity of sixty eight cowpea (Vigna unguiculata) accessions mainly from Myanmar on the basis of protein subunit variations. Fourteen polymorphic bands were recorded out of total 18 resolution bands and the banding pattern revealed four regions. The UPGMA dendrogram showed two distinct clusters. It revealed random grouping of different colored...

Author(s): Khin Thuzar Win, Aung Zaw Oo, Khin Lay Nwe, Min San Thein and Hirata Yutaka

Determination of genetic variability for physiological traits related to drought tolerance in African rice (Oryza glaberrima)

April 2011

  Relative water content, water potential and transpiration of Africa rice (Oryza glaberrima) were investigated in a controlled condition under phytotron. Two Oryza sativa cultivars, IR55423-01 (a drought tolerant genotype) and IR64 (drought sensitive genotype) and 8 O. glaberrima accessions were grown under droughted and watered conditions. The fraction of transpirable soil water (FTSW) was...

Author(s): Isaac Kofi Bimpong, Rachid Serraj, Joong Hyoun Chin, Evelyn M.T. Mendoza, Jose Hernandez and Merlyn S. Mendioro

Selection of yam seeds from open pollination for adoption in yam (Dioscorea rotundata Poir) production zones in Nigeria

April 2011

  Yam improvement through hybridization has suffered a lot of challenges over the years. Poor or non flowering of candidate parents, lack of synchrony in flowering of male and female genotypes, flowering intensity that varies with season and location, pests and diseases and other factors have serious obstacles limiting progress in yam hybrid production. This paper discussed the origin, germination and...

Author(s): Amanze N. J., Agbo N. J., Eke-Okoro O. N. and Njoku D. N.

Farmers’ participatory selection for early bulking cassava genotypes in semi-arid Eastern Kenya

March 2011

  Cassava is an important food security crop in semi-arid, Eastern Kenya, but production is constrained by planting late bulking landraces. Therefore, farmer participatory variety selection was initiated with the aim of identifying early bulking varieties with preferred root qualities. Four popular local varieties were crossed with six early-bulking varieties selected from IITA germplasm in a North...

Author(s):   Joseph Kamau, Rob Melis, Mark Laing, John Derera, Paul Shanahanand Eliud C. K. Ngugi

Genetic diversity analysis in different varieties of black gram using RAPD markers

March 2011

  The molecular marker is a useful tool for assessing genetic variation and resolving cultivars identities. The objective of the present study was to investigate the genetic diversity and relationships among 8 black gram (Vigna mungo) varieties from diverse geographic locations of U.P. and Andhra Pradesh, (India) using random amplified polymorphic deoxyribonucleic acid (RAPD) markers. Forty decamer -...

Author(s): Priya Srivastava, Anjana Pandey and Diamond Prakash Sinha

Use of a liquid inoculum of the arbuscular mycorrhizal fungi Glomus hoi in rice plants cultivated in a saline Gleysol: A new alternative to inoculate

February 2011

  The functioning and efficacy of a liquid inoculum containing spores of the arbuscular mycorrhizal fungi (AMF) Glomus hoi previously isolated from saline soil, were evaluated over growth and production of Oryza sativa plants cultivated under flooding conditions. Growth dynamics, grains weight, panicles number, as well as panicles weight were determined in the rice plants. Other...

Author(s): F. Fernández, J. M. Dell’Amico, M. V. Angoa and I. E. de la Providencia

Adaptation of Moroccan durum wheat varieties from different breeding eras

February 2011

  The continuous technological and environmental changes are reasons for periodical re-evaluation of variety performances and adaptation. The objective of this work was to re-assess the adaptation of the main registered durum wheat (Triticum turgidum var. L. durum) varieties in Morocco. Twenty three varieties were tested in six sites and during four consecutive growing seasons 2001 to 2005. The...

Author(s): Nasserlehaq Nsarellah, Ali Amamou, Mouna Taghouti and Paolo Annicchiarico

Evaluation of eucalyptus essential oil against some plant pathogenic fungi

February 2011

  Antifungal activity of eucalyptus (Eucalyptus camaldulensis Dehnh.) essential oil was evaluated and suppressed the mycelial growth of postharvest pathogenic fungi, Penicillium digitatum, Aspergillus flavus, Colletotrichum gloeosporioides and soilborne pathogenic fungi, Pythium ultimum, Rhizoctonia solani, Bipolaris sorokiniana pathogenic fungi. The experiment was...

Author(s): Nafiseh Katooli, Raheleh Maghsodlo and Seyed Esmaeil Razavi

Identification of coupling- and repulsion-phase markers in rice for brown planthopper resistance genes using F2S of IR 50 X CO 46

January 2011

  Brown planthopper, Nilaparvata lugens Stål (Homoptera: Delphacidae) is one of the most threatening  pests, often significantly reducing the rice yield. The breeding of resistant cultivar has been the most  effective way of controlling this pest. Recent advancements in DNA marker technology together with  the concept of marker-assisted selection (MAS) provide new solutions for...

Author(s):   Venkateswarlu Yadavalli, Gajendra P. Narwane, P. Nagarajan and M. Bharathi   

Genetic studies in relation to yield and quality traits in rajmash (Phaseolus vulgaris L.)

January 2011

  The experimental material comprised of 45 F1s generated by crossing ten diverse genotypes of rajmash(Phaseolus vulgaris L.) in a diallel mating design. The set of 45 test cross progenies along with their  ten  parents were evaluated in a randomized block design with two replications at the Pulse Research Substation, SKUAST-K Habak, KVK Farm SKUAST-K Pombai, Anantnag...

Author(s): Asif M. Iqbal, F. A. Nehvi., S. A. Wani, Q. Henna, Z. A. Dar and Ajaz A. Lone 

Genotypic and phenotypic interrelationships among yield and yield components in Egyptian bread wheat genotypes

January 2011

  Two field experiments were conducted in 2008/2009 and 2009/2010 growing seasons at the experimental farm of the Faculty of Agriculture, Cairo University, Giza, Egypt. Ten Egyptian bread wheat genotypes were planted in a randomized complete block design with three replications and evaluated for eight characters. The aim was to study the phenotypic and genotypic correlations and genotypic path analysis for...

Author(s): Ashraf A. Abd El- Mohsen, Samir R. Abo Hegazy and Moemen H. Taha

Participatory selection and characterization of quality protein maize (QPM) varieties in Savanna agro-ecological region of DR-Congo

December 2010

  Maize (Zea mays L.) is a major cereal crop for human nutrition in the Democratic Republic of Congo (DR- Congo). Prevailing normal maize is deficient in two essential amino acids, lysine and tryptophan. Participatory variety selection was applied to select diversified quality protein maize (QPM) varieties that possess farmers’ preferred plant and grain traits. The varieties were planted with...

Author(s): K. Mbuya, K. K. Nkongolo, A. Kalonji-Mbuyi, and R. Kizungu,

Combining ability studies over environments in Rajmash (Phaseolus Vulgaris L.) in Jammu and Kashmir, India

December 2010

  The experimental material comprised 45 F1’s generated by crossing ten diverse lines of common bean (Phaseolus vulgaris L.) in a half diallel fashion and their parents were evaluated in RBD in two replications at three locations during Kharif, 2008. The pooled analysis revealed that both gca and sca were influenced by environments, which suggested that studies are being conducted...

Author(s): Asif M. Iqbal, F. A. Nehvi, Shafiq A. Wani, H. Qadri, Z. A. Dar and Aijaz A. Lone

DNA content of several bermudagrass accessions in Florida

December 2010

  Bermudagrass (Cynodon spp.) is widely used on golf courses and sport fields in Florida. Most cultivars used on golf courses are triploid bermudagrass (Cynodon dactylon [L.] Pers. var. dactylon × C. transvaalensis Burtt-Davy) resulting from hybridizations between tetraploid common bermudagrass and diploid African bermudagrass. In order to breed and develop bermudagrass...

Author(s): Wenjing Pang, William T. Crow and Kevin E. Kenworthy

Host selection behaviour of aphid parasitoids (Aphidiidae: Hymenoptera)

November 2010

  Biological control is the central stone of Integrated Pest Management (IPM) paradigm and natural enemies are becoming an increasingly desirable prospect. Parasitoids are a widely used group of invertebrate natural enemies as biological control agents and several species are being used to control various aphid pests. In recent years, an increasing emphasis is being given to the conservation and...

Author(s): Abdul Rehman and Wilf Powell

Effect of different sowing dates on the yield and yield components of direct seeded fine rice (Oryza sativa L.)

November 2010

  The research was conducted to study the response of yield and yield components of direct seeded fine rice (Oryza sativa L.) to different sowing dates during 2008 at Agronomic Research Area, University of Agriculture Faisalabad. Experiment was laid out in a randomized complete block design with three replications having net plot size of 4 x 3 m. Experiment comprised of six different sowing dates that is...

Author(s): Nadeem Akbar, Asif Iqbal, Haroon Zaman Khan, Muhammad Kashif Hanifand Muhammad Usman Bashir

Effects of Gibberellic acid and 2,4-dichloro-phenoxyacetic acid spray on fruit yield and quality of tomato (Lycopersicon esculentum Mill.)

November 2010

  Experiment was conducted at Melkassa Agricultural Research Center, centeral rift valley of Ethiopia from September 2008 to January 2009 with the objective to determine the effects of different concentrations and combinations of 2,4-dichlorophenoxyacetic acid (2,4-D) and gibberellic acid (GA3) spray on fruit yield and quality of tomato. The experiment consisted of two tomato varieties-one processing (Roma VF)...

Author(s): Dandena Gelmesa, Bekele Abebie and Lemma Desalegn

Sustainable use of plant protection products in Nigeria and challenges

October 2010

  Nigeria’s drive to boost food security and to fight off insect pests and yield-limiting crop pathogens has led to an unintended consequence: the mass importation and build-up of obsolete and toxic pesticides. Nigerian farmers have been relying heavily on these agrochemicals for the control of various weeds, insect pests and pathogens, leading to the high importation of these products. Although...

Author(s): E. D. Oruonye and E. Okrikata

Effect of Eucalyptus pollen isolation methods on pollen viability, debris content, quantity isolated and pollen density per stigma

October 2010

  Success of interspecific hybridization in Eucalyptus depends on the availability of contamination free, clean and viable pollen from elite paternal trees. Unlike the natural process of open pollination, control pollination (CP) in Eucalyptus orchards, is a slow, tedious and labour-intensive procedure that involves high costs, but results in low seed yields. In order to overcome these...

Author(s): V. Girijashankar,

Agronomic and molecular evaluation of recombinant inbred lines (RILs) of lentil

October 2010

  Sequence-related amplified polymorphism (SRAP) and morphological markers were studied to compare the efficiency of both marker systems in the evaluation of twenty five lentil (Lens culinaris Medik.) recombinant inbred lines (RILs) and four testers. Data on 13 morphological traits were collected and analyzed. A total of 240 polymorphic SRAP’s bands (76.7%) were scored using four...

Author(s): C. Bermejo, V. P. Cravero, F. S. López Anido and E. L. Cointry

Screening of superior chickpea genotypes for various environments of Iran using genotype plus genotype × environment (GGE) biplot analysis

October 2010

  Superior crop cultivars must be identified through multi-environment trials (MET) and on the basis of multiple traits. The objective of this study was to explore the effect of genotype (G) and genotype × environment interaction (GE) on grain yield of 17 chickpea genotypes (Cicer arietinum L.) in six different research stations of Iran. GGE (G plus GE) biplot methodology was used to evaluate...

Author(s): Asghar Ebadi Segherloo, Sayyed Hossain Sabaghpour, Hamid Dehghaniand Morteza kamrani

Genetic diversity for sustainability of rice crop in Indian Punjab and its implications

October 2010

  The varietal diversity in rice crop in Indian Punjab has been increasing at a fast rate due to variable soil and climatic conditions and variable objective functions of the farmers. In spite of the fact that productivity of rice increased over time, as a result of improvement in technology and its fast adoption, the declining resource base, particularly water, soil health and pest resistance, the genetic...

Author(s):   Joginder Singh      

Application of advanced backcross QTL analysis in crop improvement

August 2010

  Domestication of crops is widely believed to be accompanied by a bottleneck that greatly reduces genetic diversity. This narrowing of genetic diversity restricts crop plant improvement by limiting the range of valuable traits available for use in modern plant breeding. Wild species are a broad resource to widen the germplasm and improve the traits in crop cultivars. However, genetic variation between species...

Author(s): Baohua Wang and Peng W. Chee

Development and use of microsatellites markers for genetic variation analysis, in the Namibian germplasm, both within and between populations of marama bean (Tylosema esculentum)

August 2010

  Tylosema esculentum (marama) has long been identified as a candidate crop for arid and semi-arid environments due to its success in these environments and the high nutritional value of the seed. Molecular markers are essential for the assessment of the levels of genetic variation present within and between populations of marama as well for future marker-assisted breeding efforts. Microsatellites were...

Author(s): M. Takundwa, E. Nepolo, P. M. Chimwamurombe, A. C. Cullis, M. A. Kandawa-Schulz and K. Kunert

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