Electrothermal air-blast constant-temperature drying collecting method of tobacco pollens

Abstract

The invention provides an electrothermal air-blast constant-temperature drying collecting method of tobacco pollens. The collecting method comprises specific steps that: during 8:00am to 12:00am or 5:00pm to 6:00pm on a sunny day, flowers of tobacco plants in a post pollen tube growth period are selected and picked; anthers are picked from fresh flowers; the flowers that can not be treated in time are instantly positioned in a low-temperature refrigerator for fresh-keeping cold preservation; collected anthers are dried in an electrothermal air-blast constant-temperature drying cabinet, such that pollens are obtained; impurities are removed from the pollens through sieving; and the pollens are stored under a dry condition in a brown wide-neck flask. According to the invention, existing artificial pollination methods are changed; pollen activity is always controlled at an optimal level; pollen quality is stable; the wasting of male parent flowers in fields is reduced; the dependency on weather during an anther collection procedure is reduced; the male tobacco plantation area is saved; pollination effect and seed yield are improved; and the comprehensive production cost of hybrid seed production is reduced.

Description

technical field [0001] The invention relates to a method for collecting agricultural crop pollen, in particular to a method for collecting tobacco pollen by electric heating blasting and constant temperature drying. Background technique [0002] In the 1950s, my country had already carried out the utilization of tobacco heterosis and hybrid seed production, but the production promotion and application did not last long due to the poor quality of the bred varieties and the high production cost of hybrid seed production. In the 1970s, after the introduction of the Burley tobacco male sterile variety MSB21 from the United States, the emasculation problem in hybrid seed production was solved, and the utilization of tobacco male sterile hybrids became active again. Up to now, a large number of new varieties of male sterile hybrids such as flue-cured tobacco, burley tobacco and oriental tobacco have been bred in China (China Tobacco Cultivation. Shanghai Science and Technology Pub...

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Problems solved by technology

[0002] In the 1950s, my country had already carried out the utilization of tobacco heterosis and hybrid seed production. However, due to the poor quality of the bred varieties and the high production cost of hybrid seed production, the promotion and application of tobacco did not last long.

The traditional hybrid pollination method of tobacco is mainly "flower-to-flower pollination". In this method, the male parent flowers must be picked and used at any time. If pollination is not possible in cloudy and rainy days, a large number of male parent flowers will be wasted in the field. There will be a serious shortage of flowers in the male parent

Yunnan Academy of Tobacco Agricultural Sciences and Yuxi China Tobacco Seed Co., Ltd. invented "a method for collecting tobacco pollen" on December 22, 2009. Its patent number is 2009101632120 and its publication number is CN101731139A. It is used in the winter seed production of flue-cured tobacco in Yunnan Obtained better effect, what this invention adopts is " the anther is dried in the shade first, then puts in the sun to dry to make the anther fully split " to get the anther method, in summer breeding areas such as Hubei, because of the many thunderstorm days, the air humidity is big , the effect of taking the medicine is not ideal, especially in the case of long-term rainy weather, the waste of male parent flowers is very serious

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