关键词: 水稻, 突变体, 黄绿叶色, 遗传标记, 转育, 香型籼稻不育系

Abstract: 【Objective】 The applied CMS sterile line and maintainer line of aromatic indica rice with marker character was bred. 【Method】 The CMS sterile line of aromatic indica rice with marker character was bred by using general crossing and natural segregation mutation yellow-green leaves plant. 【Result】 The selected yellow-green leaves mutation male sterile line has yellow-green leaves from seedling stage to mature stage. It can be distinguished from the general leaves easily. No degeneration phenomenon in yellow was found. The aromatic plant lines identified by hot water method were selected as aromatic indica rice sterile lines with yellow-green leaves marker. Its plant height was 41.5-56.5 cm. Its leaves and glumes were yellow-green. Its leaf sheath, auricles and edge of leaves were pruple-red in color. Its tillering capacity was moderate. The panicle length of Huangbiao 3A was 24.9 cm. The spikelet number per panicle of it was 145. The cereal grain of it was long grain like a shuttle. The 1000-grain weight of it was 28 g. Its growing period was 85 d. The setting percentage of its maintainer line basal panicle was hight and seeds were full. The stigma of it was purple-black in color, bigger in size, and good in exsertion rate. When it was test crossed and general reciprocal crossed with others green rice plant, its F1 generation all appeared normal green. The average segregation rate of its F2 generation population was 2.92﹕1, 2.76﹕1, and 2.96﹕1, respectively. The segregation ratio accorded with 3﹕1 by χ2 test. It indicated that the yellow-green leaves were recessive inheritance and controlled by a pair of recessive genes. 【Conclusion】 The indica rice male sterile line with yellow-green leave marker had scents and a significant difference with general rice in leaf color. Its yellow-green leaf is controlled by a pair of recessive genes. Its label character yellow-green leaf is stabilization in heredity. When it is crossed with restoring lines, the general combining ability of F1 is evidence. It indicates that the sterile line is restored easily.

Key words: rice, mutation, yellow-green leaves, heredity marker, breeding, sterile line of aromatic indica rice