Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines.

Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. Research Abstract Details 

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Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. Abstract Text:

F Taguchi-Shiobara,T Yamamoto,M Yano,S Oka,

Quantitative trait loci (QTLs) that control the performance of tissue culture in rice were detected by using 116 RFLP markers and 183 BC1F3 lines derived from two varieties, Koshihikari and Kasalath. With time, the seed callus of Koshihikari tends to turn brown and stop growing, while that of Kasalath remains yellowish-white and proliferates continuously. The performance of tissue culture in the induction of calli from seed, the subculture of induced calli, and shoot regeneration were evaluated by five indices: induced-callus weight, induced-callus color, subcultured-callus volume, subcultured-callus color, and regeneration rate. Through callus induction and subculture, eight putative QTLs (P < 0.001) were located on chromosomes 1, 4, and 9. Among these QTLs, five Kasalath alleles and three Koshihikari alleles improved tissue culture performance. No QTL for regeneration was found. Among all the QTLs, qSv1 explained the largest phenotypic variance, 33%, in subcultured-callus volume. In induced-callus color, two detected QTLs accounted for 36.4% of the total phenotypic variance; this was the highest score among the five indices used to evaluate the performance of tissue culture. Three near-isogenic lines for QTLs, located in two regions on chromosome 1, were developed to evaluate their tissue culture performance. The Kasalath alleles in qSv1 and qSc1-1 improved callus color through callus induction and subculture, and increased the subcultured-callus volume and the fresh weight of regenerated calli, including shoots, roots, and differentiated structures. In qSc1-2, the Kasalath allele improved callus color through induction and subculture. These results verified the presence of QTLs for the volume and color of subcultured callus on chromosome 1, qSv1, qSc1-1, and qSc1-2.

Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. Publishing Authors By Initials

F Taguchi-Shiobara,T Yamamoto,M Yano,S Oka,

For similar investigative techniques: clinical laboratory techniques: culture techniques: tissue culture techniques research abstracts see: investigative techniques: clinical laboratory techniques: culture techniques: tissue culture techniques research

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Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: TAG. Theoretical and applied genetics. Theoretisch

VOLUME: 112

Page Numbers: 968-76

Journal Abbreviation: Theor. Appl. Genet.

ISSN: 0040-5752

DAY: 18

MONTH: 01

YEAR: 2006

Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. Information

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LANGUAGE: eng

NlmUniqueID: 145600

Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. Keywords Mesh Terms:

KEYWORDS: Tissue Culture Techniques

MESH TERMS: physiology

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Grant and Affiliation Information for Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines.

AFFILIATION: National Institute of Agrobiological Sciences, 2-1-2 Kannondai, 305-8602 Tsukuba, Ibaraki, Japan. fstagu@affrc.go.jp

Country: Germany

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MEDLINETA: Theor Appl Genet

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