‘福龙两优29’叶片持绿性与产量形成的关系研究

Correlation Between Non-senescence and Rice Yield of‘Fulongliangyou29'

以‘福龙两优29’和‘两优培九’为材料,对生育后期的叶绿素含量和叶面积系数等持绿性指标的动态变化及其与产量形成的关系进行了分析,并对库源关系做了进一步的分析。结果表明:整个生育后期‘福龙两优29’叶绿素含量的下降速度要快于‘两优培九’,叶面积系数大小和下降速度与‘两优培九’差异很小;产量形成过程中,前期‘福龙两优29’的产量大小及增幅均弱于‘两优培九’,后期则均强于‘两优培九’;‘福龙两优29’属于"库"限制型品种,在今后的生产栽培中应采取一些有效的措施去加强其"库"容量。

Using ‘Liangyoupeijiu’as control （CK）,the hybrid rice,‘Fulongliangyou29’,was employed to study the sink/source relationship,as well as the correlation between the rice grain formation and the chlorophyll content and leaf area index of the plant.The results showed that the chlorophyll in ‘Fulongliangyou29 ’decreased at a higher rate than that in CK,while the leaf area index and chlorophyll declining ratewere not significantly different from those of CK during the entire late growthperiod;and,therice yield and growth rate were lowerduring the early stage,but greater than those of CK in the late stage.Since thesink capacitylargely determined the yield on ‘Fulongliangyou29 ’, appropriate measures should be implemented to strengthen itfor the cultivation ofthe hybrid rice.