Garden Pea Case Study

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The relevant literature on various aspects in the present study has reviewed for garden pea under the following heads. 2.1 Genetics of yield contributing traits 2.2 Inheritance pattern of Fusarium wilt resistance 2.3 Identification of molecular marker linked to Fusarium wilt resistance 2.1 Genetics of yield contributing traits For improvement programme, the best choice among several breeding methods depends upon the genetic architecture of the traits. Therefore knowledge of the nature of gene action for pod yield traits related to productivity is important for genetic enhancement of complex character like yield. Generation mean analysis is helpful in identifying the nature and magnitude of gene action including non-allelic gene interaction in order…show more content…
Two powdery mildew vulnerable lines Palam Priya and Green Pearl and three resistant genotypes, Sugar Giant, VRPMR-10 and DPP 9411 were used in this crossing programme. The presence of additive gene action for the inheritance of pod yield and associated traits in crosses Palam Priya x Sugar Giant and VRPMR-10 x Sugar Giant was observed. Positive additive gene effects for powdery mildew occurrence suggested deferring selection to the later generations in both the crosses. Five fixed lines (F8, BCF7) were recognized from three crosses with resistance to powdery mildew disease. M.A. Rahman et al (2000) investigated inheritance of yield and yield contributing characters using generation mean analysis, using the means of six basic populations viz., P1, P2, F1, F2, BC1 and BC1 in four crosses of Vigna sesquipedalis. They observed that the significance of dominance (h) gene effects for pod yield per plant and pods per plant as compared to additive (d) gene effect. However, significant and positive additive effects were observed for pod yield/plant, pods/plant, pod weight and seed weight in different

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