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Cytoplasm Effects in Relation to Agronomic Performance of Grain Sorghums, Sorghums bicolor (L.) Moench 1
Author(s) -
Atkins R. E.,
Kern J. J.
Publication year - 1972
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/cropsci1972.0011183x001200060018x
Subject(s) - biology , cytoplasm , pollen , hybrid , cytoplasmic male sterility , sterility , botany , sorghum , agronomy , genetics
Grain sorghums ( Sorghum bicolor L. Moench) differing in cytoplasmic and genetic factors affecting pollen.sterility were compared during 2 years in Iowa. Six hydrids with normal cytoplasm did not differ significantly from their counterparts in male‐sterility‐induclng cytoplasm for grain yield or the primary components of yield. In 1968 the normal‐cytoplasm hybrids bloomed later (1 day), were shorter (3 cm), and produced greater area of the third leaf from the top (9 cm 2 ) than did the hybrids with sterility‐inducing cytoplasm. In 1967 the two types did not differ significantly for these characters, and the differences do not seem of practical importance in either year. Crude protein content of the seed and pollen‐sterilty were significantly greater in both years for the sterile‐cytoplasm hybrids. Type of cytoplasm had little effect on the content of protein amino acids in the seed. Fertility‐restoration alleles seemed only to affect pollenfertility, and showed little influence on other characters.