关键词: 二形栅藻, 二形栅藻, 营养条件, 生化组分, 油脂特性

Abstract: In order to reduce labor consumption, improve cotton hybrid seed production efficiency and cut production cost, GA₃ solution was applied to inducing cotton long stigma, and cross pollination was made without emasculation. The small strong magnetic high speed motor was used as power, the small-sized pollen collector and primitive pollinator matching the pollen collector were developed. Through years of research, a new method of hybrid seed production was developed, 100 mg/kg of GA₃ solution was used to dab young buds of 8-18 days. The dosage was 150-200 μL per flower. At the flowering day, pollens of male parent were pollinated to elongated stigma of female parents without emasculation. Its supporting devices were developed such as pollen collector and low temperature storage type of pollinator. The main characteristics of these devices were easy operation, rapidness and high efficiency. The purity of hybrid seed was over 95% and met the national requirements of seed quality. This study combined the stable inducing technology, pollen collector and pollinator, and applied them in the hybrid seed production, which could save labor consumption and improve more than 30% of hybrid seed production efficiency.