关键词: 干旱灾害, 干旱灾害, 风险指数, 区划, 黑龙江

Abstract:

Study on enhancing photosynthetic characteristics of rice through pollen tube pathway method by taking maize and common rice (Longjing 4) as donor and recipient. The content change of chlorophyll a, chlorophyll b and chlorophyll, the changing trend of net photosynthetic rate at the middle and late stages of development and RAPD, Peroxidase and Esterase Isozyme analysis and investigation on agronomic characters indicated that: compared with receptor, exogenous DNA introduction arose photosynthetic characteristics of variation offspring were changed to some extant at the physiological, DNA, Protein and morphological characters level. It was suggested that high photosynthetic efficiency in maize might be incorporated into the rice plant. The present research might develop a new technical approach for hybrid rice breeding.