ARS | Publication request: PHENOTYPIC RECURRENT SELECTION FOR INCREASED POLLINATOR ATTRACTION TO PRODUCE HYBRID SOYBEAN SEED

Submitted to: American Society of Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: November 4, 2004
Publication Date: November 4, 2004
Citation: Ortiz-Perez, E., Cervantes-Martinez, I.G., Wiley, H., Hanlin, S.J., Horner, H.T., Davis, W.H., Palmer, R.G. 2004. Phenotypic recurrent selection for increased pollinator attraction to produce hybrid soybean seed. American Society of Agronomy Abstracts. Paper No. 1029.

Technical Abstract: Successful production of F1 hybrid soybean seed requires the efficient transfer of pollen from the male to the female. Insect vectors might be the preferred means to transfer pollen. Our hypothesis is that seed-set on male-sterile, female-fertile plants is a direct indicator of insect attraction. The objective of this study was to evaluate seed-set among different male-sterile, female-fertile F2:3 families using a native pollinator. Eight F2:3 families were insect-mediated cross-pollinated to their eight recurrent parents and to a common parent. These F2:3 families were segregating for male-sterile , ms2, ms3, ms6, ms8, ms9, or an unknown male-sterile allele. At flowering, male fertile plants were removed, male-sterile plants were identified, and at maturity seed set/male-sterile plant was recorded. The ANOVA for seed set showed significant differences among crosses, among families from the same cross, and within the same family. The family average for seed set /male sterile plant across families ranged from 13.3 to 212.1. Results suggested that both parents contributed some non-allelic genes for pollinator attraction or reward, irrespective whether the recurrent parent or a common parent was used as male. Several selections may be suitable for hybrid soybean seed production.