Indian Society of Genetics & Plant Breeding

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MORPHO-PHYSIOLOGICAL DETERMINANTS OF OIL YIELD IN BRASSICA lUNCEA UNDER DRYLAND CONDITIONS

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Selection criteria specific for oil improvement in Brassica juncea under dryland conditions
are defined using data on six main and nine subcomponent characters recorded on 25
genotypes. Phenotypic correlation coefficients of oil yield with siliquae/plant, seed yield
and turgor potential were positive and significant. Path coefficient analysis extended to
determine effects of main and subcomponents via main components revealed that direct
effects of most of the main components towards oil yield were low, except seed yield.
Siliquae per plant, seed weight and turgor potential had high indirect effects via seed yield.
Subcomponents shoot length, seeds per siliqua, secondary branches, siliqua length,
relative water content and osmotic potential contributed to oil yield via one or more main
component3. Selection based on these main and subcomponents would facilitate
integration of improved oil yield and homeostatic effects.
 

Keywords: Oil yield, wa ter stress, morpho-ph ysiological determinants, Brassica juncea.

Info

Year: 1992
Volume: 52
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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