摘要
作者在1984~1995年自然条件下,结合短光照处理,研究水稻一年二代、二年四代的加代季节安排;短光处理的时期和时间;休眠期的破除方法以及短光条件下的生育期、形态和产量构成因素的变化及相关性等问题。提出了水稻的非温室加代技术,并将该技术应用到新品种选育过程中,只要注意选配合适的亲本,灵活运用混合、改良集团或单粒种子选择方法,结合猪瘟病的同步筛选,据统计12年中共进行非温室加代的材料有1739个组合,5318份,目前,已经选育出一些高产、稳产、优质、抗稻瘟病的新品种(系),并在生产中得到大面积推广应用。还通过试验改进和完善,提出了一套非温室加代育种程序。实践证明,利用自然条件进行非温室加代技术是一种简单易行、经济有效的新技术。
Some problems concerned in rice generation proliferating with 2 generations in one year and 4 generations in two years such as seasonal arrangement,time and days of short light duration treatment,method of breaking dormancy as well as variations and corre- lations in rice growing period,morphology and yield component under short light durationconditions were studied by the authors in combination with various short light duration treat-ments under natural conditions in 1984~1995. As a result,the rice nongreenhouse generation proliferating techniques are put up and applied to the selection and breeding of new rice vari-eties. Through combining appropriate crossing parents, using flexibly methods of selecting mixed and improved mass seeds or single grain seed in combination with synchronous screen-ing of rice blast resistance,some new rice varieties (lines)with stable high yield,good quality and blast resistance were selected and bred after performing nongreenhouse generation prolif-erating of 5 318 materials in 1739 combinations in total during past 12 years. These varieties (lines)are already popularized and used on a large scale in commercial production- In addi-tion,through various trials and tests as well as continuous improvements and perfections, a set of nongreenhouse generation proliferating procedures were put up. According to the evi-dence of practice,the nongreenhouse generation proliferating technique utilized under natural conditions is a simple economic and efficient new technique
出处
《上海农业学报》
CSCD
1997年第4期28-36,共9页
Acta Agriculturae Shanghai
关键词
水稻
非温室加代技术
新品种
选育
Rice (Oryza sativa)
Nongreenhouse generation proliferating technique
New variety
Selection and breeding