摘要
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％。
Photosynthetic rates were measured on 8 genotypes from 6 families of 2 genera of gramineae and malvaceae besides Yuan F2-1, a progeny from a wild crosses between upland rics( Oryza saliva ) and changmangbai( Echinochloa caudata ) , a summer dominant native bamgrass. The results are as follows : 1)It was significant different that the photosynthetic rates among families by means of variances analysis.2)C4 plant was always higher thanC3 plant in which the consequences of it were ehangmang-bai > corn > sorgum > millet > Yuan F2-1 > cotton > upland rice. 3) There was no difference of it inside species or between genotypes. It was an effective way to improve upland rice photosynthetic rate by wild corsses between C3 plant and C4 plant or gene transformation. In this experiment the photosynthetic rate of Yuan F2-1 was 29.72% over its maternal parent handao 65,an upland variety that is commercial used in rice production.
出处
《河北农业科学》
2001年第2期42-46,共5页
Journal of Hebei Agricultural Sciences
