超级杂交水稻扬两优6号结实特性的研究

Study on grain filling characteristics of two-line super hybrid rice Yanglianyou 6

以代表性杂交籼稻品种为材料,研究超级两系杂交籼稻扬两优6号的结实特性。结果表明:扬两优6号的产量较两优培九和汕优63分别提高15.05%和16.63%;与汕优63相比,扬两优6号的总颖花量高19.11%;与两优培九相比,扬两优6号的结实率和千粒重高7.86%和3.27%。扬两优6号与两优培九相比,起始灌浆势大,灌浆速率快,到达最大粒重的时间短,米粒背、中、腹部的淀粉粒排列紧密。不同年份不同地点间扬两优6号平均受精率比两优培九高5.86%~9.51%,结实率高9.63%~15.55%,充实度高8.21%~16.63%。上述结果表明扬两优6号不仅具有高产量潜力,而且具有高结实特性,结实率高而稳定,籽粒充实度高,有利于发挥超高产优势。

With indica hybrid rice as material,the grain filling characteristics of two-line super hybrid rice yanglianyou 6 was investigated.Compared with liangyoupeijiu and shanyou 63,the grain yield of yangliangyou 6 increased by 15.05% and 16.63%;Compared with shanyou 63,the spikelets of yangliangyou 6 increased by 19.11%;Compared with liangyoupeijiu,the seed-setting rate and 1 000-grain weight of Yangliangyou 6 increased by 7.86% and 3.27%.Compared with liangyoupeijiu,the initial growth power of yangliangyou 6 wa...