Inheritance of Groat Protein in Interspecific Oat Crosses

Abstract

ABSTRACT

Efficiency of augmented designs for selection

“…sterilis has been recognized as a source of genes for several quantitatively inherited traits (e.g., Campbell and Frey, 1972;Lawrence and Frey, 1976;Takeda and Frey, 1976;Cox and Frey, 1984). My results support those findings.…”

Inheritance of groat protein percentage in Avena sativa L. × A. Fatua L. Crosses

“…sterilis crosses is under genetic control . Several studies have indicated significant additive gene action for this trait, with partial dominance towards low protein percentage in early generations (CAMPBELL & FREY, 1972b ;SPILDE et al ., 1974;SRAON et al, 1975 ;IWIG & OHM, 1976) . Heritability estimates in these studies have ranged from 9 to 76%, with most estimates in the 40 to 50% range .…”

Recurrent selection for protein yield in oat

“…Campbell and Frey (1972b) showed that sig nificant genetic variation for protein concentration was present in populations of interspecific matings, even though the parents did not differ in protein concentration. Lyrene and Shands (1975b) observed transgressive segregates for high protein in interspecific crosses, indicating genetic diversity between the two parents.…”

“…Linkage and plieo-13 tropic effects may have delayed progress to some extent, but they did not prevent the successful introgression of highprotein genes into A. sativa germplasm and the isolation of several adapted, high-protein lines with acceptable yields (Campbell and Frey, 1972b;Iwig and Ohm, 1978).…”

“…A. sterills germplasm, however, may contain genes with major effects (or several genes with small effects closely linked together). Campbell and Frey (1972b) noted the high frequency of parental types for protein concentration they recovered in small populations derived from interspecific matings, and concluded that protein concentration in those populations was simply inherited. Sraon et al, (1975) estimated the number of effective factors in several populations derived from interspecific matings to range from 1 to 25, depending on the genetic divergence of the parental lines.…”