当前位置: 首页 > 文章 > Erect panicle super rice varieties enhance yield by harvest index advantages in high nitrogen and density conditions 农业科学学报 (英文) 2017,16 (7)
Position: Home > Articles > Erect panicle super rice varieties enhance yield by harvest index advantages in high nitrogen and density conditions Journal of Integrative Agriculture 2017,16 (7)

Erect panicle super rice varieties enhance yield by harvest index advantages in high nitrogen and density conditions

作  者:
Liang, Tang;Hong, Gao;Yoshihiro, Hirooka;Koki, Homma;Tetsuya, Nakazaki;Liu Tian-sheng;Tatsuhiko, Shiraiwa;Xu Zheng-jin
单  位:
Shenyang Agr Univ, Key Lab Northeast Rice Biol & Breeding, Key Lab Northern Japonica Super Rice Breeding, Rice Res Inst,Minist Agr,Minist Educ, Shenyang 110866, Peoples R China;Kyoto Univ, Lab Plant Breeding, Grad Sch Agr, Kyoto 6068502, Japan;Liaoning Acad Agr Sci, Shenyang 110161, Peoples R China
关键词:
super rice;erect panicle;harvest index;nitrogen;planting density
摘  要:
The erect panicle (Ep) type is an important characteristic for japonica super rice in Northeast China and plays a significant role in enhancing yield. The Ep type is considered to be a genetic ideotype resource to the japonica super rice group by virtue of its agronomic advantages such as grain number per panicle and biomass. This study addresses the effects of nitrogen and planting density conditions on yielding performance regarding panicle type (PT) using the recombinant inbred line (RIL) population derived from the cross between an Ep variety Liaogeng 5 and non-Ep variety Wanlun 422. The genetics underlying the Ep type proved to be robust not only for panicle-type optimization but also plant height, panicle length, flag leaf length and seed density. We also found that regardless of nitrogen and density, correlation between harvest index (HI) and plant height was not significant in Ep type whatever the nitrogen and density. The application of Ep type provides a potential strategy for yield improvement by increasing biomass through HI maintainable in rice.

相似文章

计量
文章访问数: 4
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊