关键词: EVI, EVI, 植被覆盖, 时空变化, 陇南山地

Abstract: Because of the qualities which pea have such as easy to homozygous of recessive genes and stabilize genetic substance, easy to observe phenotypes and select traits, we conducted the study of researching pea’s genetics of recessive genes. And the goals of our study are breeding of high-quality and high-yielding pea varieties and improving the breeding efficiency. The materials that used in this study were two pea varieties. One is dwarf semi-leafless white round pea with white flower and hard pod. The other is high stalk normal lobule brown coved pea with purple flower and edible pod. Through hybridization, the study aimed to breed new pea variety with high quality, high yield and lodging resistance. And the results were: seeds in F1 were white and round, and the plants showed the characters of high stalk, normal lobule, purple flower and hard pod. The seed color and plant apparent characters of F2 accorded with dominant-recessive separation ratio as 3:1 by the chi-square test. The observations of the traits leaf axillary cyanine in spots and purple flower showed the same numbers and it fitted the effect of complete-linkage; ‘Suwan4’ had been breed that showed all the above recessive genotypes such as dwarf, semi-leafless, white flower and high yield. The successful breeding of ‘Suwan4’ provided many breeding materials with recessive genes for pea breeding. Utilization of apparent selective of recessive genes could confirm the selection target for breeding earlier, select the characters in the aspects of high yield and resistance, which for the purpose of accelerating the breeding process, especially has very important effect in the selecting of characters controlled by one pair or two pairs of dominant-recessive genes.