单 位：
浙江大学原子核农业科学研究所;安徽农业大学农学系
关键词：
白化转绿型叶色标记;杂种纯度;光温敏核不育系;杂交水稻;生理特性;农艺性状;基因定位
摘 要：
以我国主栽的籼型光温敏核不育系培矮 6 4S为起始材料 ,利用 30 0Gy的6 0 Co γ射线辐照干种子 ,经多代选择选育了一个携带白化转绿型叶色标记的新型不育系玉兔S。该不育系苗期性状明显比原亲本培矮 6 4S差 ,但成熟期的主要农艺性状、育性特征、配合力、抗病性及稻米品质均与培矮 6 4S相仿。补偿性生理机制研究表明 ,在分蘖、拔节和开花阶段玉兔S叶绿体内腺苷酸激酶和RuBP羧化酶的活性要比培矮 6 4S高。遗传研究表明 ,白化转绿型突变性状受单隐性基因控制 ,并在幼苗阶段特异性表达。对不育系玉兔S在两系杂交水稻生产中的应用前景作了讨论。
译 名：
Breeding and Characteristics of Photo-Thermo Sensitive Genic Male St erile Rice Yutu S Labeled with Green-Revertible Albino Leaf Marker
作 者：
ZHAO Hai-jun 1,2, WU Dia n-xing 1,3,*, SHU Qing-yao 1,3, SHEN Sheng-quan 1, MA Chuan-xi 2 (1Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 31 0029, China;2Department of Agronomy, Anhui Agricultural University, Hefei 230 036, China;3State Key Laboratory of Rice Biology, China National Rice Researc h Institute, Hangzhou 310006, China;)
关键词：
green-revertible albino leaf marker; hybrid purity; photo-thermo sensitive genic male sterile line; hybrid rice; physiological tra its; agronomic characteristics; gene mapping
摘 要：
A novel type of photo-thermo sensitive genic male sterile (PTGMS) rice line Yut u S labeled with green-revertible albino leaf color marker was developed from t he leading PTGMS indica rice line Pei′ai 64S with 300 Gy 60Co gamma rays irradiation of the dry seeds through continuous selections. The seedling charac ters of Yutu S were significantly worse than that of the wild type Pei′ai 64 S , however the major agronomic characters, fertility characteristics, combining a bility, disease resistance, and grain quality of Yutu S were similar to those o f Pei′ai 64S in mature plant. Physiological compensation mechanism analysis sh owed that an increase in the activity of adenylate kinase and ribulose-1,5-bi sphosphate carboxylase was observed in the chloroplast of Yutu S during tiller ing, booting, and flowering stages. Genetic study indicated that the mutated gre en-revertible albino leaf color trait specially expressed at seedling stage wa s controlled by a single recessive gene. The prospects of utilization of Yutu S in the two-line hybrid rice production were discussed.
