Cytology and Genetics of a Tissue Culture-Derived Soybean Genic Male-Sterile, Female-Sterile Ilarslan, H. Skorupska, H. T. Horner, Harry Horner, Harry Palmer, R. G.
dc.contributor.department Agronomy
dc.contributor.department Botany
dc.contributor.department Agronomy 2018-02-17T18:08:39.000 2020-06-30T00:54:17Z 2020-06-30T00:54:17Z 1997
dc.description.abstract <p>A completely male-sterile, female-sterile mutant was derived from tissue culture of cv. Calland. The primary goal was to identify its inheritance, allelism, and cytology. Calland sterile (TC) was nonallelic with <em>st</em><sub>2</sub>, <em>st</em><sub>3</sub>, <em>st</em><sub>4</sub>, and <em>st</em><sub>5</sub> female-sterile and malesterile mutants. In all crosses, except <em>st</em><sub>5</sub>, single-gene recessive inheritance was documented. Critical ratios, 15 fertile: 1 sterile (for two loci) and 45 fertile: 19 sterile (for three loci), were observed in the F<sub>2</sub> families from the cross of heterozygous Calland TC and<em>St<sub>5</sub>st<sub>5</sub></em>. F<sub>3</sub> segregation data confirmed the duplicate factor inheritance of Calland TC. Calland TC was designated <em>St<sub>6</sub>st<sub>6</sub>st<sub>7</sub>st<sub>7</sub></em> and assigned the genetic type collection number T331H. The mutant was studied for abnormalities during microsporogenesis. The first abnormality was the occurrence of hollow-core nucleoli in sporogenous mass cells. During anaphase I and anaphase II of meiosis, lagging chromosomes and unequal chromosome segregation were observed, resulting in numerically and genetically unbalanced microspore nuclei. This also resulted in four microspores, and in five to eight microspores held together by common callose walls. Dissolution of callose released microspores into locules. Most microspores enlarged and were surrounded by microspore/pollen walls. After microspore mitosis, most young pollen grains degenerated. No viable pollen grains were evident. The sterility in Calland TC can be attributed to desynapsis.</p>
dc.description.comments <p>This article is from <em>Journal of Heredity </em>88 (1997): 129.</p>
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dc.identifier.articleid 1045
dc.identifier.contextkey 8781769
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath bot_pubs/40
dc.language.iso en
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dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Botany
dc.subject.disciplines Plant Biology
dc.subject.disciplines Plant Breeding and Genetics
dc.title Cytology and Genetics of a Tissue Culture-Derived Soybean Genic Male-Sterile, Female-Sterile
dc.type article
dc.type.genre article
dspace.entity.type Publication
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