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Heritabilities of Some Agronomic Characters for the Interspecific Cross of Crambe abyssinica and C. hispanica 1
Author(s) -
Meier V. D.,
Lessman K. J.
Publication year - 1973
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1973.0011183x001300020026x
Subject(s) - biology , heritability , bloom , heterosis , test weight , seedling , yield (engineering) , interspecific competition , horticulture , maturity (psychological) , botany , hybrid , zoology , agronomy , grain yield , ecology , psychology , developmental psychology , genetics , materials science , metallurgy
Plant selections from PI 247310 (C abyssinica ) and PI 279346 (C. hispanica ) were paired randomly and hybridized to determine variability present among progeny and to gain estimates of heritabilty for seedling emergence, first bloom, 95% bloom, maturity, height, seed yield, seed size, test weight, and oil percentage. Two experiments were conducted in 1971. Experiment 1 contained parents, F 1 's, and F 2 's and Experiment 2 contained parents, F 3 's, and F 4 's. Significant differences were found among F 3 and F 4 entries for all characters except oil percent with ranges in the F 4 exceeding that of the parents for 95% bloom, maturity, height, seed size, and test weight. Evidence of heterosis was detected for yield, test weight, and oil percent since the means of the F 1 generation for these traits exceeded those of either parent. If characters are ranked according to their heritability estimates, seed yield, oil, and maturity were the lowest; test weight, emergence, height, and seed size were intermediate; and first bloom and 95% bloom were highest.