摘要
为了进一步明确籼粳亚种间杂交水稻‘甬优12’作单季晚稻栽培的高产高效技术途径,选择2009—2011年台州、宁波7个点145组数据,分析了‘甬优12’作单季晚稻栽培不同产量水平下的穗、粒、重结构,并进行了相关、回归分析。相关分析表明,每穗总粒、每穗实粒和结实率与产量呈极显著的正相关,有效穗和千粒重与产量呈极显著的负相关。多元回归分析获得了各产量性状对于产量的多元回归模型为y=-8012.58+27.29x1+36.59x2-25.53x3+165.61x4-239.75x5±766.42。通径分析发现在水稻诸主要经济性状中,穗粒数对产量的直接效应最高达到了2.3526。综合分析提出了‘甬优12’作单季晚稻栽培的高产高效技术途径:适当控制有效穗数,主攻大穗,提高结实率,并提出了"适当控制有效穗数,主攻大穗,提高结实率"可作为水稻超高产育种的技术路线,在水稻超高产育种中将是行之有效的。
In order to make clear the high yield and efficiency cultivation techniques for indica-japonica intersubspecific hybrid rice‘ Yongyoul2＇, 145 sets of data from 7 test sites in Taizhou and Ningbo from 2009 to 2011 were collected to study the constitutions of panicle, grain, grain weight under different yield levels and make the correlation and regression analysis when ‘Yongyou 12＇ was planted as single cropping late rice. The correlation analysis showed that, the whole grain number and filled grain number per panicle were significantly positive with yield, while the effective panicle and thousand-grain weight were significantly negative with yield. The multiple regression analysis established the multiple regression models between the yield and the yield traits： 33 =-8012.58＋27.29xl＋36.59x2-25.53x3＋ 165.61x4-239.75xs_＋766.42. Path analysis suggested that, among the main economic traits of rice, the highest direct effect panicle numbers on yield reached to 2.3526. Accordingly, controlling the number of effective panicle properly, emphasizing the large panicles and improving the seed setting rate were proposed for the high yield and efficiency cultivation techniques for ‘Yongyoul2＇ as single cropping late rice. Meanwhile, the cultivation techniques could also serve as a technique route for effective breeding of superior high-yield rice.
出处
《农学学报》
2012年第10期1-4,13,共5页
Journal of Agriculture
基金
中国科学技术重大贡献奖项目"单季稻高产高效栽培技术研究"(台政办发[2010]124号)
关键词
籼粳亚种间杂交水稻
'甬优12’
单季晚稻
产量性状
通径分析
Indica-japonica Intersubspecific Hybrid Rice
＇Yongyoul2＇
Single Cropping Late Rice
YieldTraits
Path Analysis
