稻稗远缘杂交后代“远F_2-1”光合速率观察与分析Research of Photosynthetic Rates of “Yuan F_2-1”a progeny From a Wild Crosses Between Oryza sativa and Echinochloa caudata
李慧敏,赵凤梧,王雪征,赵明,王志敏,赵秀琴
摘要(Abstract):
通过对旱稻与长芒稗杂交后代系“远F_2-1”、禾本科(Gramineae)及锦葵科(Malvaceae)6个属栽培品种8种基因型进行光合速率观察发现:1)不同科、属间,光合速率存在极大的差异,方差分析达显著水平。2)无论是同一科内还是不同科间,C_4作物光合速率均大干C_3作物,其顺序为稗草>高粱>玉米>谷子>远F_2-1>棉花>早稻。3)C_4作物不同属间,光合速率差异较大,尤以稗草最高,高粱、玉米次之,谷子最低,统计分析达显著水平。4)同一种内不同品种(基因型)间,光合速率无差异。5)C_3、C_4植物间远缘杂交与基因交流,是提高早稻光合速率的有效途径。本试验中,“远F_2-1”光合速率超母本(旱稻65)29.72%。
关键词(KeyWords): 禾本科;锦葵科;C_3植物;C_4植物;远缘杂交;光合速率
基金项目(Foundation):
作者(Author): 李慧敏,赵凤梧,王雪征,赵明,王志敏,赵秀琴
DOI: 10.16318/j.cnki.hbnykx.2001.02.010
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