HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Smith, J. R. Articles by Nelson, R. L. Search for Related Content PubMed Articles by Smith, J. R. Articles by Nelson, R. L. Agricola Articles by Smith, J. R. Articles by Nelson, R. L.

Predicting Yield from Early Generation Estimates of Reproductive Growth periods in Soybean¹

Previous research has demonstrated positive relationship between reproductive growth periods and seed yield in soybean [Glycine max (L.) Merr.]. The purposed of this research was to evaluate predicted response in seed yield by selection for length of reproductive growth periods within early generation segregating populations. Two populations of 131 and 89 F₂-derived lines were developed from crosses between experimental lines selected for differences in seed-filling period and were tested in the F₃ and F₄. Single-rowpl ots wereg rown in a randomized complete blocked design with two replications at Urbana, IL in 1984 and 1985. The soil type each year was a Flanagan silt loam (Aquic Argindolis) Reproductive growth periods were estimated as the difference between specific reproductive growth stages (R1, R4, R5, R7, and R8). Heritabilities were estimated by the regression coefficient of F₄ generation lines on F₃ generation lines. Genotypic correlations were calculated from the same offspring-parent relationship. Heritabilities and genotypic correlations was were used to predict gain from selection. Heritabilities for most of the reproductive growth periods were not higher than those for yield, and the genotypic correlations between yield and reproductive growth periods were generally small. The predicted gain in seed yield by selection for increases in reproductige growth periods, relative to selection for increases in seedy ield, was low in all cases. Early generation selection for reproductive growth periods was unreliable in identifying high yielding lines.

Key Words: Glycine max (L.) Merr. • Relative selection effeciency • Indirect selection • Seed filling period

² Former graduate research assistant, Univ. of Illinois, and research geneticist, USDA-ARS and; assistant professor, Dep. of Agronomy, Univ. of Illinois, Urbana, IL 61801.

Received for publication July 2, 1986.

This article has been cited by other articles:

				R. E. Brevedan and D. B. Egli Short Periods of Water Stress during Seed Filling, Leaf Senescence, and Yield of Soybean Crop Sci., November 1, 2003; 43(6): 2083 - 2088. [Abstract] [Full Text] [PDF]