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 Singh, R. J. Articles by Hymowitz, T. Search for Related Content PubMed Articles by Singh, R. J. Articles by Hymowitz, T. Agricola Articles by Singh, R. J. Articles by Hymowitz, T.

Backcross-Derived Progeny from Soybean and Glycine tomentella Hayata Intersubgeneric Hybrids

Dep. of Agronomy, Univ. of Illinois, Urbana, IL 61801

^* Corresponding author.

Wild perennial species of the subgenus Glycine Willd, have not been exploited in soybean [Glycine max (L.) Merr.] breeding programs. This paper discusses wide hybridization in the genus Glycine and reports on the origin, identification, and breeding behavior of a synthesized amphiploid soybean x G. tomentella Hayata hybrid and its backcross-derived progeny. Amphiploid H213-2a (2n = 118) plants showed almost normal meiotic pairing (0.711 + 57.9811 + 0.33IV), but later meiotic stages were abnormal, showing laggards and bridges, and the plants set only a few pods. The F₂, F₃, and F₄ plants carried the expected 2n = 118 chromosomes, and thus were cytologically stable. A growth-hormone solution containing 100 mg gibberellic acid (GA₃), 25 mg naphthalene acetic acid (NAA) and 5 mg kinetin/L distilled water was sprayed onto the pollinated gynoecia to enhance pod retention (14.19%) in H213-2a x soybean crosses. Without daily hormone spray, only three pods of the 3417 florets pollinated were harvested 19 to 21 d after pollination. The BC₁ plants were obtained in two cross combinations: (i) H213-2a x ‘Clark 63’ = H562, and (ii) H213-2a x ‘Essex’ = H564. The H562 plants contained 2n = 76, (BC₁; expected 2n = 79), suggesting the loss of three chromosomes. The H564 plants contained 2n = 98 chromosomes and may have originated by the union of a female gamete (n = 59) and an unreduced male (n = 40) spore. All the BC₁ plants were totally sterile, and attempts are being made to generate BC₂ plants.

Received for publication October 16, 1989.

This article has been cited by other articles:

				M. E. Patzoldt, R. K. Tyagi, T. Hymowitz, M. R. Miles, G. L. Hartman, and R. D. Frederick Soybean Rust Resistance Derived from Glycine tomentella in Amphiploid Hybrid Lines Crop Sci., January 22, 2007; 47(1): 158 - 161. [Abstract] [Full Text] [PDF]

				G.L. Hartman, M.E. Gardner, T. Hymowitz, and G.C. Naidoo Evaluation of Perennial Glycine Species for Resistance to Soybean Fungal Pathogens That Cause Sclerotinia Stem Rot and Sudden Death Syndrome Crop Sci., March 1, 2000; 40(2): 545 - 549. [Abstract] [Full Text]