Accurate identification method for oil content of rapeseed under specific field cultivation conditions

Abstract

An accurate identification method for oil content of rapeseed under specific field cultivation conditions is disclosed. A non-shading convenient-to-irrigate field piece in a region with a suitable temperature and light intensity during a planting season is selected, before planting, the field is flattened, furrows are prepared, the furrows has a width of 2 to 3 m, 0.35-0.45m deep trenches are formed, seedlings are planted thinly, a distance between rows of the seedlings is 0.5-0.7m, a distance between plants of the seedlings is 0.4-0.6m, and after initial flowering of rapeseed, 0.05-0.15m of water is held in the trenches until harvesting of the rapeseed; plant line materials of different growth stages and different initial flowering stages are labeled with plates for marking the initial flowering time, the plant line materials with a difference of 2 to 3 days in the initial flowering stages are regarded as the same type for oil content analysis and comparison; and the plating time of line materials and variety materials and classified plant line materials of different growth stages and different initial flowering stages are adjusted according to the different growth stages to allowthe difference in the initial flowering stages to be 2 to 3 days or less for oil content analysis and comparison. The method can realize accurate identification of the oil content.

Description

technical field [0001] The invention relates to the technical field of rape genetics and breeding. Background technique [0002] Rapeseed is an important oil crop in my country, and the ultimate goal of its production is oil yield. The oil content of rapeseed germplasm is an important index in the breeding process. The genetic research on the oil content of rapeseed shows that the oil content of rapeseed is mainly determined by genetic factors, mainly determined by the maternal genotype, the genes controlling oil content have additive and dominant effects, and are also greatly affected by environmental factors. There is a genotype-environment interaction. [0003] The development of rapeseed is controlled by a large number of factors and is relatively complicated. Environmental factors such as light, temperature, and moisture all affect the oil content. The forced ripening of rapeseed by high temperature in the late stage of maturity may cause the seeds to shrink, not plum...

AI Technical Summary

Problems solved by technology

There are the following deficiencies: the planting density is high, it is difficult to ensure the light transmission and air permeability between plants; the water supply is insufficient, and the consistency of soil moisture and soil moisture during the synthesis of rapeseed oil cannot be guaranteed; the oil content is not analyzed according to the growth period. The difference is divided, the growth period of rapeseed varies greatly, and the oil content of rapeseed also varies greatly, which is an important influencing factor of oil content