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Effect of Temperature Treatments on Combining Ability for Seed Set in Alfalfa 1
Author(s) -
Dane Fenny,
Haaland Ronald,
Lentner Marvin,
Melton Bill
Publication year - 1974
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/cropsci1974.0011183x001400040018x
Subject(s) - emasculation , diallel cross , biology , compatibility (geochemistry) , horticulture , heterosis , medicago sativa , reciprocal , botany , pollination , materials science , pollen , hybrid , composite material , linguistics , philosophy
Five selected clones of alfalfa ( Medicago sativa L.) were crossed in a diallel fashion under four temperature treatments with and without emasculation. Data for seeds per flower were analyzed to determine combining ability components and the interactions across the different temperature treatments. General combining ability (GCA) was of more importance in determining seed set than specfic combining ability (SCA) across all temperatures. Differences in reciprocal crosses were significant at all temperatures. Significant interactions for GCA, SCA, and reciprocal effects across temperatures frequently occurred. This indicated that these components of combining ability for seed set were not stable across environments. Differences due to temperature or emasculation effects were larger in clones with high self‐ and cross‐compatibility ratings than those with low ratings.