Vol. 1, Issue 3 (2016)
Comparative performance and differential expression of economic parameters in the parents of bivoltine silkworm, Bombyx mori L. and their hybrids
Author(s): Veeranna Gowda, Kalpana GV, Ashok Kumar K
Abstract: Comparative performance of selected parental and different crossing pattern hybrids is an important yard stick to understand the potentiality of a breed / hybrid for evaluating the differential expression of quantitative traits. The parental breeds, foundation crosses and different cross hybrids were reared in three replications during three different seasons of the year to evaluate their performance for pre- and post-cocoon traits. Hybrid vigor in terms of heterosis for different crossing pattern hybrids was studied for important economic traits. The results of the study reveals that, out of different crossing pattern hybrids studied, two each of single, three-way and four-way crosses exhibited better performance with desirable positive heterosis for most of the economic traits, which may be attributed to better inherent advancement and prophecy for field testing based on the overall performance and heterosis for each of the quantitative trait studied.