Inheritance of seed yield and white rust (Albugo candida) resistance in Indian mustard (Brassica juncea (L.) czern and coss.)
Loading...
Date
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CCSHAU
Abstract
Six generations (P1, P2, F1, F2, B1 and B2) of two crosses viz. RH 0115 (S)
x EC 126745 (R) and RH 0120 x EC 126745 (R) were raised in randomized block
design with three replications during the year 2006-2007 in normal sown (E1) and late
sown (E2) environments to study the inheritance of white rust resistance, nature and
magnitude of gene effects involved in the genetic control of seed yield and its attributes
and relationship between white rust resistance and biochemical parameters. Disease
intensity data was analysed by using χ2-test whereas, yield and its attributes and
biochemical parameters were analysed by using generation mean analysis as per
Hayman, 1958.
White rust resistance was governed by single dominant gene. Correlation
studies indicated the positive association of sugars with disease intensity whereas,
negative association was observed between phenols and disease intensity.
Seed yield and its attributes were found to be predominantly under the
control of additive gene effects except main raceme length and seed yield per plant
whereas, non-additive gene effects were predominant in case of biochemical
parameters. Duplicate type of epistasis was frequent for biochemical parameters
whereas, it was less frequent for seed yield and its attributes.
Description
Keywords
Indian mustard, Brassica juncea, Seed yield, Inheritance, White rust, Resistance