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研究表明,供试组合W6154s/特青、亚优2号和光优6028生育前期具有较强的物质积累能力;其中W6154s/特青和光优6028前期群体生长率(CGR)高主要与叶面积指数(LAI)发展较快有关.部分原因是它们前期积累的干物质对叶片的分配率明显高于对照;而亚优2号前期CGR高除了叶面积有明显作用外,与较高的净同化率(NAR)也有一定关系.W6154s/特青和亚优2号主要由于后期适应性差,物质生产变劣,故实际产量不如对照汕优63.光优6063生育前、中期群体物质生产与对照威优64相近,但产量明显提高,其主要原因在于后期适应性强,能维持较高的LAI和NAR.光优6028虽然后期物质生产性能也较好,但产量不如光优6063,可能主要与物质运转效率偏低有关.
The results showed that the early combination of W6154s / Teqing, Ya-You 2 and Guangyou 6028 had strong material accumulation ability. The high population growth rate (CGR) of W6154s / Teqing and Guangyou 6028 was mainly related to the leaf area index LAI), partly due to their earlier accumulation of dry matter on leaves was significantly higher than the control allocation; and Yyou 2 pre-CGR in addition to a significant role in leaf area, with higher net assimilation rate ( NAR) also have a certain relationship.W6154s / Teqing and Yayou 2 mainly due to poor adaptability late, material production worse, so the actual yield is less than the control Shanyou 63. Guangyou 6063 before and after breeding group production and control Weiyou 64 But the yield increased obviously, which is mainly due to the adaptability in the later stage and the high LAI and NAR can be maintained. Although Guangyou 6028 has better performance in the later stage of material production, its yield is lower than that of Guangyou 6063, which may be mainly related to the material operation efficiency Low related.