Morphological, Anatomical and Genetic Analysis for a Rice Mutant with Abnormal Hull

Quanfang Zhang^{a, b
,},
Jiandi Xu^{a, b
,},
Yun Li^c,
Peizhou Xu^{a, b},
Hongyu Zhang^{a, b},
Xianjun Wu^{a, b
, ,}

a.
Rice Research Institute, Sichuan Agricultural University, Wenjiang 611130, China
b.
Key Laboratory of Southwest Crop Gene Resources and Improvement of Ministry of Education, Sichuan Agricultural University, Ya'an 625014, China
c.
The Second Agricultural Scientific Institute of Chengdu, Wenjiang 611130, China

More Information

Corresponding author: E-mail address: wuxjsau@126.com (Xianjun Wu)

摘要

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Abstract: A mutant with abnormal hull was first discovered from a twin-seedling strain W2555 in rice (Oryza sativa L.). The mutant had sparse branches and decreased number of florets from the base to the peak. Frequently, the florets at the top of the panicle did not develop completely. The underdeveloped florets often showed slender and white in their life cycle. Genetic analysis indicated that the mutant traits were controlled by a single recessive gene (temporarily designated asah). ah gene controlled the development of inflorescence meristem and the flower organ. The florets of mutant showed degenerated lemma and palea. Stamens and lodicules were homeoticly transformed into pistils and palea/lemma-like structures, respectively. It seemed that ah mutant phenotypes of the homeotic conversions in lodicules and stamens were very similar to that of the B loss-of-function spw1 gene reported previously in rice.
- floral organ /
- anatomical structure /
- genetic analysis

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参考文献(31)

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