两系杂交稻栽培生理生态特性 Ⅲ.结实特性与库源特征

• 作 者: 洪植蕃 林菲 庄宝华 朱朝枝
• 机 构: 福建农学院农学系,福建农学院农学系,福建农学院农学系,福建农学院农学系 福州 350002,福州 350002,福州 350002,福州 350002
• 出 处: 福建农学院学报
• 发表日期: 1992年03期
• 关键词: 两系杂交稻 枝梗 颖花数 亚种间 库源 充实度 结实性 空粒 产量潜力 结实期

调查分析若干两系杂交稻组合的结实性和库源关系的结果表明,除了光优6063外。多数组合的结实性均不如对照汕优63.结实率低主要是空粒多造成的,秕粒较少,并存在明显的强弱势枝梗或颖花差别.结实率高低与同化物竞争或库源协调状况有很大关系,亚种间大穗组合对源的削弱更为敏感,结实期源(叶面积)的大小,源的活性和物质运转能力都同样重要.高库源比或大穗组合应通过加强栽培,增强源的功能,以提高产量潜力.研究还初步表明,一些亚种间组合可能存在非物质供应的结实障碍;颖花中颖果发育的启动可能要比物质灌浆过程更为重要.

The results of investigation and analysis on the relationship between seed setting and source of some two-line hybrid rice showed that except for Guangyou 6063, Most combinations are not as strong as the control Shanyou 63. Seed setting rate is mainly caused by a large number of empty grains, grains less, and there is a clear difference between the strength of the branches or spikelets. Seed setting rate and the assimilate competition or library Source coordination is closely related to the subspecies of large panicle combinations are more sensitive to the source of weakened, the source of seed (leaf area) size, source activity and material functioning are equally important. The combination should enhance the yield potential by strengthening the cultivation and enhancing the function of the source.The study also initially showed that some subspecies combinations may have the substantial obstacle of the non-material supply, and the initiation of the development of the caryopsis in the spike may be more than the physical filling process Important.