细胞质背景和海拔差异对水稻形态性状遗传参数的影响

Influence of cytoplasmic backgrounds and altitude variation on the genetic parameters of quantity traits in rice

以云南海拔2 650 m高寒稻区种植的地方粳稻老品种小麻谷和具有籼稻细胞质背景的改良品系南34为亲本,分析比较了在400、1 860、2 200 m等3个不同海拔下产生的正反交F2群体中形态性状的遗传参数。结果表明:在不同海拔产生的水稻正反交F2群体形态性状遗传参数具有较大差异,细胞质和海拔各因素对形态性状具有明显的效应,但两者互作对形态性状的效应不明显。

The genetic parameters of morphological characters were analyzed in reciprocal F2 populations generated at three different altitudes of 400,1 860 and 2 200 m.The material parents were XMG,japonica rice landrace grown at Yunnan alpine region at 2 650 m,and N34,an improved line that cytoplasm donated by indica rice.The results showed that the genetic parameters of quantity traits in rice F2 populations generated from reciprocal hybrids at different altitudes had obviously different.Cytoplasm and altitude variation had strong effects on morphological traits,but the interaction effects of cytoplasm and altitude variation had less effects on those traits.