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Fertility Restoration in Soft Winter Wheat Hybrids 1
Author(s) -
Trupp C. R.
Publication year - 1976
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/cropsci1976.0011183x001600040002x
Subject(s) - biology , software maintainer , hybrid , pollen , cultivar , agronomy , trait , common wheat , breeding program , microbiology and biotechnology , horticulture , botany , gene , genetics , computer science , chromosome , programming language
The ability of a stable cytoplasmic male‐sterile wheat ( Triticum aestivum L .) to produce pollen‐fertile hybrid progeny after pollination with a partially effective restorer parent was termed “ease of restoration” (EOR). Within the limits of measurement error, results using A/R crosses were equivalent to results nsing corresponding maintainer lines as pollen parents in R/B crosses. Using R/B crosses, EOR was predicted for advanced breeding lines of the Michigan State Univ. wheat breeding program, for current and historical commercial cultivars of Michigan, and for entries of the 1973 Uniform Eastern Soft Wheat Nursery. The materials tested were predicted to vary widely for EOR. Only a small portion of variability in EOR could be accounted for by the presence of minor genes for restoration in the maintainer line. Practical uses of extreme EOR types are discussed. EOR is a genetically controlled trait for which prediction can be accomplished with a fair degree of accuracy using partially effective restorer tester lines as female parents.