籼粳杂交水稻榆杂29的选育与应用研究

滇型籼粳杂交水稻榆杂２９是用滇榆１号不育系（籼粳交偏梗型）与恢复系南２９组配 成的，具有丰产性好、抗逆性较强、适应性广的特点，１９９５年通过云南省农作物品种审定。介绍了该组合的选育经过、特征特性、栽培及繁殖制种配套技术。

Breeding and Utilization of Dian-type Hybrid Rice Yuza 29

Among Dian-type hybrid rices in Yunnan Province, Yuza 29 is a japonica type hybrid combination which was bred by the Rice Research Institute of Yunnan Agricultural University in 1991. At present, Yuza 29 was recognized as a good hybrid combination with respect to its characteristics of super high-yielding, rice blast resistance, and wide ecological adaptability. There was significant difference in parental heredity in Yuza 29, in which the male perent namely Nan 29 consists of the heredity of both indica and japonica rice. In 1994, Yuza 29 created a new world record of japonica rice grain yield 16.6 t/hm 2 in Binchuan, Yunnan. Up to now, Yuza 29 has covered an accumulative area of 1 000 hectares in Yunnan, it will be extended as a predominant hybrid combination in the large japonica rice area of Yunnan and the southwestern China during the next five years. This paper presented the study results on breeding procedures, integrated technologies of multiplication, seed production, and super high-yielding cultivation of Yuza 29.