A kind of method of improving pear hybrid seed germination rate and seedling rate

Abstract

The invention discloses a method for improving the germination rate and the survival seedling rate of pear hybrid seeds. The method comprises the steps that 1, hybrid fruits are picked and stored, wherein mature fruits are picked and stored in a storage room for one month; 2, the seeds are stripped; 3, the seeds are laminated, wherein the seeds need to be refrigerated in a refrigerator at the temperature of 2-6 DEG C for about 60 days; 4, sowing is carried out, wherein germinated seeds are directly sown, and non-germinated seeds are soaked in clean water and sown after the seed outer skin and inner skin are peeled; seedling management is carried out, wherein 3% metalaxyl-hymexazol 500-fold aqueous solution is used for irrigating roots 1-2 times in the two-leaf stage, and seedling stage damping off is prevented; operation is easy and convenient, the method has the advantages of being high in seedling emergence speed, uniform in seedling emergence, high in survival seedling rate and the like, the seed culture efficiency is effectively improved, and practicability is strong; the germination rate and the survival seedling rate of pear hybrid seeds are further improved.

Description

technical field [0001] The invention relates to the field of fruit tree hybrid breeding, in particular to a method for increasing the germination rate and seedling rate of pear hybrid seeds. Background technique [0002] Hybrid breeding is the main way of pear breeding at present. Due to the limited number of hybrid seeds obtained by artificial hybridization, pear hybrid seeds need to reach a certain cooling capacity to release dormancy, and pear hybrid seeds have characteristics such as thick and compact seed coats compared with other hybrid seeds such as apples, which give the seeds a chance to germinate. bring some difficulties. The traditional breeding method mainly utilizes the natural cold source to stratify the hybrid seeds for 60-80 days in winter, and then sows after germination in spring. Generally, the seedling rate is only 50-60%. [0003] In the prior art, as the patent application number 200910061395.5 of the authorized patent "Method for Accelerating Germina...

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Problems solved by technology

[0003] In the prior art, as the patent application number 200910061395.5 of the authorized patent "Method for Accelerating Germination and Breeding of Sand Pear Hybrids", its operation needs to be carried out through the picking of sand pear hybrid fruits, fruit sorting and selection, pre-storage, fruit refrigeration, and seed extraction. The operation steps of peeling and cleaning, seed sand storage, and sowing are relatively complicated. It takes 3 months in the fruit cold storage operation step. Counting the 30 days of seed sand storage, the breeding cycle is at least 4 months. , the breeding cycle is longer, which also increases the breeding cost. Although the germination rate can reach 80-90%, there is still a gap from the better germination rate; the published patent application with the patent application number 201510117501.2 "A kind of improvement of Korla incense In "Methods for the Germination Rate of Pear Hybrid Seeds", the operation method is complicated, the post-ripening period takes 110-130 days, and the stratification takes 55-60 days. Although the germination rate can reach more than 85%, the breeding cycle is long.

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