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Self‐Compatibility Studies with Astragalus Cicer L. 1
Author(s) -
Townsend C. E.
Publication year - 1971
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/cropsci1971.0011183x001100050053x
Subject(s) - raceme , biology , pollen , ovule , horticulture , self pollination , botany , pollination , population , fruit set , hand pollination , compatibility (geochemistry) , inflorescence , demography , geochemistry , sociology , geology
Astragalus cicer L. is a predominantly self‐incompatible species, since 43% of a 424‐plant population did not set a single seed, and only 2% set in excess of 50 seeds per raceme following self‐pollination under field conditions. Air temperatures of 27 C day‐16 C and 21 C night, 27 C day‐21 C night, and 32 C day‐21 C night had no consistent effect on the self‐compatibility reaction of 16 clones. However, there was evidence of clone by temperature interaction. The average number of ovules per ovary was 11.5. The percentage of aborted pollen grains was generally very low. Three methods of measuring self‐compatibility (percentage of florets setting seed, average seed set per floret, and average seed set per raceme) were highly correlated.