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 St. Martin, S. K. Articles by Ehounou, N. E. Search for Related Content PubMed Articles by St. Martin, S. K. Articles by Ehounou, N. E. Agricola Articles by St. Martin, S. K. Articles by Ehounou, N. E.

Randomness of Intermating in Soybean Populations Containing Male-Sterile Plants

Dep. of Agronomy, Ohio Agric. Res. and Development Ctr., The Ohio State Univ., Columbus, OH 43210

^* Corresponding author.

The use of genetic male sterility has been proposed to facilitate intermating in soybean [Glycine max L. (Merr.)]. With many breeding procedures, failure of such insect-mediated pollination to result in equal contributions of the parents to the gametic pool could lead to undesirable results. The objective of this experiment was to evaluate male-sterility-facilitated intermating in a soybean population with respect to equality of parental contribution. Isolated plantings consisting of male-sterile maintainer line L74-01 with eight pollen parents were made in 1981 to 1983. The parents carried marker genes so chosen that the progeny of the crosses with L74-01 could be identified as to pollen parent. The F_–1 seed harvested from L74-01 was planted in a winter nursery and F_–1 plants harvested individually. Frequencies of marker phenotypes were observed in an F_–2 progeny row to identify the pollen parent of each F_–1 plant. The chisquare statistic was used to test for equality of contribution to the pollen pool by all pollen donors. Statistically significant differences among pollen donors were detected in all 3 yr. Variance of family size (V_k) in hypothetical intermated population with the same distribution of gametic frequencies as those of this experiment was calculated from the observed frequencies of parents in the pollen pool. The estimates of V_k were, respectively, 1.2, 1.3, and 0.9 for the 3 yr of the study. Since these estimates were less than the value expected in a random-mating population due to random variation of family size, inequality of gametic contributions, to the extent observed in this experiment, is probably not a serious drawback to the use of male sterility-facilitated intermating in soybean breeding.

Received for publication November 14, 1987.

This article has been cited by other articles:

				I. Cervantes-Martinez, M. Xu, L. Zhang, Z. Huang, K. K. Kato, H. T. Horner, and R. G. Palmer Molecular Mapping of Male-Sterility Loci ms2 and ms9 in Soybean Crop Sci., February 6, 2007; 47(1): 374 - 379. [Abstract] [Full Text] [PDF]