In order to improve the β-carotene content in maize grain by breeding and minimize vitamin A deficiency, a complete diallel cross was designed with eight inbred lines of maize, and 64 combinations were obtained in this study.
Many sheep breeders flush ewes and rams with a daily ration of grain during breeding to increase fertility.
Flowering time QTL were mapped in a RIL population derived from a cross of BTx642 and Tx7000, genotypes used in U.S. grain sorghum breeding programs as sources of drought tolerance [ 37].
It is therefore important to understand the influence of allele combinations on grain size when considering breeding for preferred grain shape and subsequently enhanced rice grain yield.
To the Bremmers, who live on a farm in western Nebraska, in the village of Venango (population a hundred and sixty-five), and who have earned money over the years by raising organic grain and by breeding dogs, this meant getting up at five-thirty to feed the animals and pitch tumbleweed — the very chores, they could not help but be reminded, that Brandenn used to do.
Understanding the mechanisms responsible for genotypic variation in Cd accumulation in grain will accelerate breeding efforts [ 7, 8].
However, the significant reduction of phenotypic variation in grain shapes in breeding germplasm pool is probably as a result of relatively recent evolutionary and domestication bottleneck.
To further investigate whether these candidate regions were in fact enriched for genes affected by selection, genome-wide association studies (GWAS) were conducted on 7 selection traits targeted in soybean breeding (grain yield, plant height, lodging, maturity date, seed coat color, seed protein and oil content) and 2 non-selection traits (pubescence and flower color).
Here, sink demand in stems declined during flowering, which may be a trait that has been selected to the extreme in domesticated crops, such as grain sorghum, as an unintended consequence of breeding for high grain yields.
