J Integr Plant Biol. ›› 2002, Vol. 44 ›› Issue (11): 1333-1338.

• Research Articles • Previous Articles     Next Articles

Cultivating Rice with Delaying Leaf-Senescence by PSAG12-IPT Gene Transformation

LIN Yong-Jun, CAO Meng-Liang, XU Cai-Guo, CHEN Hao, WEI Jun and ZHANG Qi-Fa   


PSAG12-IPT gene was introduced into an elite rice ( Oryza sativa L. ssp. indica) restorer line Minghui 63 through Agrobacterium mediated transformation method. Out of 61 independent transgenic plants obtained, a few acquired a recognizable phenotype in which leave senescence was delayed to a great degree. The results of field plot test on two homozygous transgenic lines indicated: (1) the stay green ability of transgenic plants was significantly improved; (2) both the seed setting rate and the number of panicles per plant of transgenic plants were significantly increased compared with that of the non transgenic plants of Minghui 63; and (3) the plant height of transgenic plants was significantly reduced.

林拥军* 曹孟良** 徐才国 陈 浩 魏 君 张启发

摘要: 利用农杆菌介导的遗传转化方法将PSAG12IPT导入籼稻品种明恢63。在获得的61个独立的转基因植株中,有一些表现出叶片衰老显著延缓,对选择的两个纯合转基因株系的小区试验的结果显示:(1)转基因植株倒三叶的持性极显著延长;(2)两个纯合转基因株系比原品种的结实率极显著提高,株高极显著降低;(3)两个纯合转基因株系的有效穗数比原品种极显著或显著提高。

关键词: 水稻;农杆菌;转化;PSAG12IPT;持绿性;农艺性状

Key words: Oryza sativa, Agrobacterium, transformation, PSAG12-IPT, stay green, agronomic traits

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