Stamen killing device and method based on temperature sensitivity of wheat and rice pollen

Abstract

The invention discloses a stamen killing device and method based on temperature sensitivity of wheat and rice pollen. The device comprises a casing, wherein a temperature control device, a fan-type heating device and a stamen killing tank for accommodating a wheat ear or rice ear are mounted in the casing from left to right; a left side plate of the stamen killing tank is a seal plate, a plurality of heat circulation channels are evenly distributed on a top plate and a bottom plate, a temperature sensor is further mounted in the stamen killing tank and connected with an input end of a temperature control device, and an output end of the temperature control device is connected with the fan-type heating device; a water spray door gap is reserved in a top door cover of the casing. The device is easy to operate and convenient to carry and kills stamens thoroughly, and the temperature is controlled accurately; temperature control accuracy plays a critical role in stamen killing effect of wheat and rice, stamen killing is not affected by weather, time and places and is time-saving, efficient and thorough, and stamen killing efficiency and accuracy of hybrid wheat and rice are improved.

Description

technical field [0001] The invention relates to the field of wheat and rice breeding, in particular to a device and method for malecide based on the temperature sensitivity of wheat and rice pollen. Background technique [0002] At present, there are three main methods of emasculation in the hybridization process of hybrid wheat and rice, which are artificial pruning and emasculation, high temperature emasculation, and chemical emasculation. The first two are mostly used in the rice breeding process, while wheat is mainly artificially clipped and emasculated. Artificial pruning and emasculation is to completely cut off the stamens in a glume, but at the same time when the stamens are cut off, it is easy to damage the stigma of the pistil, resulting in the loss of activity of the stigma or incomplete detasseling, which will lead to hybridization failure; and artificial Clipping and detasseling requires a lot of manpower and is inefficient. High-temperature detasseling is cu...

AI Technical Summary

Problems solved by technology

Artificial pruning and emasculation is to completely cut off the stamens in a glume, but at the same time when the stamens are cut off, it is easy to damage the stigma of the pistil, resulting in the loss of activity of the stigma or incomplete emasculation, which will lead to hybridization failure; and artificial Clipping and detasseling requires a lot of manpower and is inefficient

High-temperature detasseling is currently widely used in rice breeding. Using this method requires both hot water and cold water to adjust the appropriate water temperature, but it is inconvenient to obtain hot water in the field; high-temperature detasseling is more difficult to implement for wheat. Because wheat hybridization cannot be pulled out of the ground, it is easy to cause the stalk to break during high temperature killing, which affects the success rate of hybridization

There are residues of phytotoxicity in the chemical method of male killing, the effective period of pesticide application is short and easily affected by the climate, and the overall technology is immature

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