Bt基因导入对海岛棉农艺性状和产量性状影响的研究

对9个经PCR检测确定为转Bt基因阳性的海岛棉品系的农艺性状和产量性状考察结果表明,外源基因Bt的导入对9个海岛棉品系的农艺性状和产量性状有不同程度的影响。1受体为K222时,Bt基因导入使得株高、始节高、始节数、有效果枝数、铃数、有效铃数差异达到极显著水平(P0.01)。当受体为XH25和XH30时,转基因品系农艺性状与对照差异无显著水平;2 9个转基因品系间株高、始节高、始节数和铃数差异达到极显著水平(P0.01),有效果枝数和有效铃数差异达到显著水平(P0.05);3 9个转基因品系的产量性状与对照差异均无显著性;4株高、始节高、始节数、果枝数、有效果枝数、铃数和有效铃数与籽棉产量呈显著相关;5两年(2014和2015)和两点(北疆和南疆)间农艺性状及产量性状差异达到显著水平。

Effects of introducing Bt gene on agronomic characters and yield characters of Gossypium barbadense L.

The agronomic and yield characters of nine strains of Gossypium barbadense L.,in which Bt gene was detected by PCR,were studied.The results showed that agronomic characters and yield characters were impacted to different extem.(1) When K222 was the recipient,the difference in plant height,start high,initial segment number,number of effective branches,boll number and number of effective bolls got to excellent significant level (P ＜0.01).When XH25 and XH30 were recipients,there was no difference between transgenic and non-transgenic;(2) The difference in plant height,start high,initial segment number and boll number between the nine strains got to excellent significant level (P ＜0.01).Difference in number of effective branches and number of effective boll arrived at significant level (P ＜ 0.05);(3) There was no significant difference between transgenic and non-transgenic in yield characters;(4) Plant height,start high,initial segment number,boll stem number,number of effective branches,boll number and number of effective boll were significandy related to yield;(5) The difference between two years (2014 and 2015) and two areas(the northern of Xinjiang and the southern of Xinjiang) got to significant level in agronomic characters and yield characters.