摘要
选用3个具有高产潜力的大穗型品种冈优188、金优188和菲优188与汕优63对照种植,在不同生育时期测量各器官的干物质积累量.研究结果表明：大穗型品种总干物质积累量为2251.91 ～2395.60 g·m^-2,比对照高11.05 ％～18.15％,且70％以上的干物质在始穗前积累,具有较高的物质生产和积累优势;籽粒产量与总干物质积累量呈显著正相关（r-0.990＊）;大穗型品种生物产量高,中后期叶片和茎秆干物质积累量（486.29,330.40 g ·m^-2）平均比对照高30.99％和25.37％,茎叶干物质转化率低,功能叶持绿期长,穗部干物质积累量大（1379.80 g·m^-2）,超过对照17.14％,表现出明显的中后期生产优势.
Three big-panicle indica hybrid rice combinations （Gangyou 188, Jinyou 188, Feiyou 188） were planted with Shanyou 63 as C K to study dry matter accumulation and distributive characteristics. The results indicated that it has the great advantages for big-panicle combi- nations in dry matter production and accumulation and its total dry matter accumulation ranged from 2251.91 to 2395.60 g· m^-2. The dry matter more than 70 % was accumulated before heading date. Grain yield was significantly positively correlated with total dry matter accumu- lation （ r = 0.990 ＊ ）. There was highly biological-yield in big-panicla cultivars as the dry matter accumulation of the leaves and stems gained 30.99 % and 25.37 % more than control reached 486.29 and 330.40 g · m^-2 ,respectively during the middle and late growth stages. There were lower dry matter transportation amount of leaf and sheath and higher dry matter accumulations in panicles （ 1379.80 g · m^-2 ）. The functional leaves of big-panicle cultivars has longer green period. The production superiority of big-panicle cultivars was exhibited during these stages.
出处
《西南农业学报》
CSCD
北大核心
2014年第3期910-914,共5页
Southwest China Journal of Agricultural Sciences
基金
四川省地市州农科所水稻联合育种项目
"十一五"四川省主要农作物育种攻关项目
乐山市主要农作物育种攻关项目
关键词
水稻品种
大穗
干物质积累与分配
生物产量
Rice
Big-panicle
Dry matter accumulation and distribution
Biological yield
