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Effects of Accidental Selfing on Estimates of General and Specific Combining Ability in Alfalfa 1
Author(s) -
Dudley John W.
Publication year - 1963
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/cropsci1963.0011183x000300060018x
Subject(s) - selfing , geneticist , citation , library science , biology , computer science , sociology , demography , genetics , population
considered to be a cross-fertilizing species Hanson etal. a reported a significant amount of self fertilization in a 14-clone dialiel where seed were produced in cages with honey bees as pollinators. Other investigators (7) have found approximately 90% cross-pollination under natural field conditions. Tysdal etal. (7) found that hand pollinations made without emasculation yielded primarily crossfertilized progenies. Bolton (1) although not reporting percent crossing found significant reciprocal differences from unemasculated crosses. Buker and Davis4 found no reciprocal differences from unemasculated crosses while Carnahan (2) found only cases of significant reciprocal difference in 95 crosses using 3 characters. Wilcox and Wilsie 5 found reciprocal differences in both emasculated and unemasculated crosses but considered them to have little effect on estimates of general and specific combining ability. Frakes etal. (4) found significant reciprocal differences for dry matter yield in emasculated crosses.