首页|Characterization and Genetic Analysis of a Novel Mutant mst of Rice Defective in Flower Development
Characterization and Genetic Analysis of a Novel Mutant mst of Rice Defective in Flower Development
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A spontaneous mutant with multiple stigmas (mst) was found in an indica rice line 466. The mst mutant exhibits normal at the vegetative development stage and produces normal inflorescence structures. The difference between the mutant and the wild type was observed when the stamen primordium began to develop. In the mst florets, palea and lemma opened, lodicules were homeotically transformed into palea/lemma-like structures, and stamens were homeotically transformed into carpel-like structures. It looked like multiple stigmas being full of the whole floret. The phenotypic changes of mst were very similar to that of B-like mutant spw1. Compared with other mutants with pistillate morphologies, the severe mst florets showed that the inner three floral organs were completely changed into palea/lemma-like structures. Moreover, the mutant was female sterile. Occasionally, with the changing environment, one or two stamens were fertile. Genetic analysis indicated that the mutant traits were controlled by a single recessive gene.
riceflower developmentmultiple stigmas mutantfloral organ identity
LI Yun、XU Pei-zhou、ZHANG Hong-yu、FU Shao-hong、YANG Jin、ZHANG Ru-quan、WU Xian-jun
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Rice Research Institute, Sichuan Agricultural University, Wenjiang 611130, China
Crops Research Institute, Chengdu Academy of Agricultural and Forestry Sciences, Wenjiang 611130, China
Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Ya'an 625014, China
Program for Changjiang Scholars and Innovative Research Team in Universities of China
NETL
NSTL
万方数据
维普
