January 2011

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

  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   

January 2011

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

  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 

January 2010

Sampling strategies for proper quantification of carotenoid content in cassava breeding

  Rapid-cycling recurrent selection has been implemented to produce cassava varieties that deliver provitamin A carotenoids to human populations that are affected by vitamin A deficiency. Rapid-cycling  selection relies on quantification in just one plant per genotype. This study was conducted to assess the  reliability of single-plant evaluations and the effect of age of the plant on...

Author(s):   Darwin Ortiz, Teresa Sánchez, Nelson Morante, Hernán Ceballos, Helena Pachón, Myriam C.  Duque, Alba Lucía Chávez and Andrés Felipe Escobar