Education Commons^™

Pollen Fertility And Agronomic Performance Of Sorghum Hybrids With Different Male-Sterility-Inducing Cytoplasms, R. E. Secrist, R. E. Atkins

Journal of the Iowa Academy of Science: JIAS

Effects of three sources of male-sterility-inducing cytoplasm in sorghum [Sorghum bicolor (L.) Moench] were compared in crosses with 217 male parents. Hybrids of these parents and A2 Redbine 58', 'A3 Combine Kafir 60', and 'A4 Martin' female parents were evaluated for percentage stained pollen, seed set of bagged panicles, plant height, and days to midbloom. Additionally, hybrids of 12 of the inbreds crossed to each female parent were evaluated for grain yield and other agronomic traits in comparison with hybrids in A1 male-sterility-inducing cytoplasm.

Twenty-one inbreds restored pollen fertility to hybrids with A2 cytoplasm, 11 restored pollen fertility to …

Cytoplasmic Effect On Groat Protein Content In Lnterspecific Matings Of Avena Sativa L. And A. Sterilis L., A. Rezai, K. J. Frey

Journal of the Iowa Academy of Science: JIAS

Thirty sets of reciprocal isopopulations, each with 20 Fi-derived oat lines from the BC₀, BC₁, and BC₂ of all possible matings among five Awia slerilis L. accessions and two A. saliva cultivars, were evaluated in a replicated field trial to determine whether groat protein content was influenced by cytoplasmic inheritance and to study associations between protein content and agronomic traits. A. slerili cytoplasm had no direct effect on groat protein content, but significant interactions between the cytoplasms and nuclear genes from A. saliva and A. s1erilis were detected. Thus, the potential may exist for improving …