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

Genetic diversity of salt tolerance rice landraces in Vietnam

July 2009

A collection of 200 salt tolerance rice landraces was assed for genetic diversity using quantitative agro-morphological characters. ANOVA showed highly significant differences (LSD 0.01) among the traits assessed such as grain length, grain width, number of unfilled grains, 1000-grain weight, leaf length and leaf width except panicles per plant and yield. Correlation coefficients showed that all the traits were highly...

Author(s): Nguyen thi Lang, Pham thi Be Tu, Nguyen Chi Thanh, Bui Chi Buu and Adbelbagi Ismail

Comparing the yield components of three most popular commercial watermelon cultivars in Kenya with one newly introduced cultivar and one landrace

June 2009

  High yield is a major goal for watermelon (Citrullus lanatus) breeders. The objective of this study was to compare the yield components of some watermelon accessions available in Kenya and to identify high yielding accession(s) for recommendation to Kenyan growers and for use in breeding programs. A field trial involving five cultivated watermelon accessions in Kenya namely...

Author(s): Bernard Mukiri Gichimu, Barack Otieno Owuor and Mathwes Mito Dida

Combining ability for maize grain yield in striga endemic and non-endemic environments of the southern guinea savanna of Nigeria

June 2009

  Combining ability studies for maize grain yield and other agronomic characters were carried out using ten open-pollinated maize varieties and their 45 F1 hybrids in a Striga hermonthica (Del.) Benth endemic zone (Shonga) and non-endemic zone (Ilorin) in Kwara State, Nigeria, during the 2005 cropping season. Bothgeneral combining ability (gca) and specific combining ability (sca)...

Author(s): G. Olaoye and O.B. Bello

Assessment of intervarietal differences in drought tolerance in chickpea using both nodule and plant traits as indicators

June 2009

  5 lines of Tunisian varieties of chickpea (Cicer arietinum L.) inoculated withMesorhizobium ciceri UPMCa7 were monitored during the vegetative stage on sterilized sandy soil. 2 levels of soil moisture were compared (100 and 33% of field capacity). The work was aimed at assessing the relative tolerance of these lines to drought and then, to research relationships between the level of sensitivity of...

Author(s): Nehla Labidi, Henda Mahmoudi, Messedi Dorsaf, Ines Slama and Chedly Abdelly

Identification of PCR-based DNA markers flanking three low phytic acid mutant loci in barley

June 2009

  Phytic acid (PA) is the most abundant form of phosphorus (P) in cereal grains. PA chelates mineral cations to form an indigestible salt and is thus regarded as an antinutritional agent and a contributor to water pollution. Grain with low phytic acid (lpa) genotypes could aid in mitigating this problem. In barley, more than 20 lpa mutant lines have been isolated, representing at least 6 different genetic...

Author(s): R. E. Oliver, C. Yang, G. Hu, V. Raboy and  M. Zhang

Allelopathic and antifungal potentialities of Padina pavonica (L.) extract

June 2009

  In this study, potential allelopathic of a brown alga Padina pavonica (L) was evaluated.  Aqueous extracts of the alga obtained at room temperature / 24 h (E1), 50°C / 4 h (E2) and 100°C / 2 h (E3) were tested on the germination and early growth of crop plants and growth of three fungal strains: Fusarium graminearum,Penicillium expansum and Alternaria...

Author(s): Faten Omezzine, Rabiaa Haouala, Asma El Ayeb and Neziha Boughanmi

Natural incidence and infectivity level of three nepoviruses in ornamental crops in Iran

May 2009

  Damage to ornamental crops by nepoviruses has occurred sporadically in Iran in the past. However, since 2006, outbreaks of nepoviruses have been recorded every year. The most affected ornamental crops were surveyed in two main cultivation areas in provinces of Markazi (Mahallat) and Tehran in 2006 - 2007. In all, 420 samples (with or without any conspicuous virus symptoms) were collected and analyzed by...

Author(s): T. Ghotbi and N. Shahraeen

The effect of fosetyl-Al application on stomata in tomato (Lycopersicon esculentum Mill.) plant

May 2009

  In this study, a fungicide namely Aliette WG 800 (80% Fosetyl-Al) was pulverized on tomato (Lycopersicon esculentum Mill.) grown under greenhouse conditions and the likely effects of this fungicide on stomata of tomato were examined. Applications of Fosetyl-Al were carried out at recommended dosage (200 g/100 L water) as given on the label and two fold higher (400 g/100 L water) dosages. The fungicide...

Author(s): Ä°lkay Öztürk Cali

Status of macadamia production in Kenya and the potential of biotechnology in enhancing its genetic improvement

May 2009

  Macadamia (Macadamia spp.) is considered the world’s finest dessert nut because of its delicate taste and numerous health benefits. It is grown in Kenya both as a cash crop and foreign exchange earner with Kenya producing about 10% of the world’s total production. Macadamia has great potential for poverty reduction due to the high value of its products and its low requirement for external...

Author(s): L. N. Gitonga, , A. W. T. Muigai, E. M. Kahangi, K. Ngamau and S. T. Gichuki

Grain filling rate is limited by insufficient sugar supply in the large-grain wheat cultivar

May 2009

  Wheat grain yield can be limited by source, sink or by both. Inconsistency of the previous results reflects the interactions between genotypes and environments. In north China where the hot, dry wind was frequent during grain filling, new winter wheat cultivars with large grains suffer from loss of grain weight quite often because the grain filling rate (GFR) is low. In the present study, the carbohydrate...

Author(s): Guohua Mi, Fanjun Chen and Fusuo Zhang

Indigenous pest and disease management practices in traditional farming systems in north east India. A review

May 2009

  Traditional farming system is an ecologically based age-old farming system developed by ancient farmers through generations of their interaction with nature and natural resources for food, fodder and fiber. Indigenous knowledge is the knowledge of the indigenous people inhabiting different geographical regions of the world with their own language, culture, tradition, belief, folklore, rites and rituals. This...

Author(s): Gopal Kumar Niroula Chhetry and Lassaad Belbahri

Intercropping and its application to banana production in East Africa: A review

April 2009

  Bananas are very important in Kenya for domestic consumption and export. They are extensively grown where they are mainly intercropped with short term crops. There has been an increase in the grower interest in using intercropping-growing two or more crops simultaneously on the same land  in the development of new cropping systems for their land. Intercropping could reduce management inputs and result in...

Author(s): George Ouma

Genetic yield stability in some sunflower (Helianthus annuus L) hybrids under different environmental conditions of Sudan

April 2009

  Nineteen locally developed sunflower (Helianthus annuus L.) hybrids and an introduced one (Hysun 33) were evaluated at two irrigated locations, New Halfa and Rahad for two consecutive seasons (2003/04 and 2004/05) in order to estimate stability of performance for seed yield per ha (t). A randomized complete block design with four replicates was applied at each location. Data on seed yield was collected....

Author(s): Salah B. Mohamed Ahmed and Abdel Wahab H. Abdella

Resistance in Kenyan bread wheat to recent eastern African isolate of stem rust, Puccinia graminis f. sp. tritici, Ug99

April 2009

Stem or black rust, caused by Puccinia graminis, has historically caused severe losses to wheat (Triticum aestivum) production worldwide. The causal race, commonly known as Ug99 and designated as TTKS based on the North American nomenclature, carries virulence for several genes commonly present in wheat germplasm. All Kenyan germplasm are known to be susceptible or partially susceptible to Ug99 although no proper...

Author(s): P. N. Njau, R. Wanyera, G. K. Macharia, J. Macharia R. Singh and B. Keller

Influence of temperature and genotype on Pythium damping-off in safflower

March 2009

  Improvement of genetic potential in safflower (Carthamus tinctorius) against Pythium species would be an efficient means of control of this major seed and seedling fungal pathogen. The type and content of reaction for plant to pathogen could be severely affected by environmental conditions such as temperature. In this study seed rot and seedling damping-off of fourteen safflower genotypes that came from...

Author(s): Pahlavani M. H.,  Razavi S. E., Kavusi F. and  Hasanpoor M.

Genetic polymorphism in exotic safflower (Carthamus tinctorious L.) using RAPD markers

March 2009

  Safflower is a drought tolerant annual oil crop and this gives it an advantage over the other crops in the drier parts of Kenya. It is valued worldwide as a source of high quality vegetable oil. In the past, characterization of safflower using molecular markers has been limited. The objective of this study was to evaluate the degree of polymorphism in 36 safflower accessions using RAPDs. Sixty-one...

Author(s): Mahasi M. J.,  Wachira F. N.,  Pathak  R. S., and  Riungu  T. C.

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