Method for producing diploid seedless water melons

Abstract

The invention provides a method for producing diploid seedless watermelons. A diploid strong-female watermelon plant and a tetraploid pollinator watermelon plant are placed under the same regional cultivation conditions; when female flowers of the diploid strong-female watermelons bloom, the female flowers can only have contact with pollen of pollinator tetraploid male flowers; therefore, seeds can not develop, but fruits can, so as to form diploid seedless fruits. The diploid watermelons are of hybrid varieties or conventional varieties, and have the characteristic that the male flowers within at least twenty sections do not develop at all; the female flowers of the diploid watermelons can develop and form watermelon fruits under the stimulation of tetraploid watermelon male-flower pollen, while the seeds do not develop; and in addition, residual seed shells are white, thin and soft, and is less than 12 millimeters long. The tetraploid watermelons are of the hybrid varieties or conventional varieties, and under the conditions of artificial or insect transmission, the pollen of the tetraploid watermelons can stimulate the diploid watermelons to form the seedless fruits.

Description

1. Technical field [0001] The invention relates to a production method of watermelon, in particular to a production method of diploid seedless watermelon. 2. Background technology [0002] 1. Triploid seedless watermelon has appeared since the 1950s. After decades of research and breeding, it still cannot become the mainstream of watermelon. The reason is that the production cost of triploid seedless watermelon is high and the risk larger. [0003] (1) The seed production cost of triploid seedless watermelon is expensive: triploid seedless watermelon is to use tetraploid and diploid watermelon hybridization, and the triploid seed that forms; Because tetraploid is exactly few seed watermelon, Therefore, the production of triploid seeds must also be less. In addition, the production of triploid seeds relies entirely on manual bagging, isolated pollination, and high labor costs. Especially for small triploid seedless watermelons, the cost of seeds has become the main obstacl...

AI Technical Summary

Problems solved by technology

[0002] 1. Triploid seedless watermelon has appeared since the 1950s. After decades of research and breeding, it still cannot become the mainstream of watermelon. The reason is that the production cost of triploid seedless watermelon is high and there are risks. larger

[0003] (1) The seed production cost of triploid seedless watermelon is expensive: triploid seedless watermelon is to use tetraploid and diploid watermelon hybridization, and the triploid seed that forms; Because tetraploid is exactly few seed watermelon, Therefore, the production of triploid seeds must also be less

In addition, the production of triploid seeds relies entirely on manual bagging, isolated pollination, and high labor costs

Especially for small triploid seedless watermelons, the cost of seeds has become the main obstacle to popularization

[0004] (2) The cotyledons of triploid seeds hardly develop, the germination rate is low, the seedling rate is also low, and the initial growth of seedlings is slow, which further increases the cost of seeds

[0005] (3) Triploid seedless watermelon has a long growth period, a late maturity period, few early-maturing varieties, and few types of varieties, so it is difficult to adapt to the rich and colorful requirements of society.

[0006] (4) The vegetative growth of triploid watermelon is vigorous, and if you don’t pay attention to it, it will grow wildly. If it encounters rainy weather again, it will easily cause difficulty in fruit setting and loss of yield.

[0011] The first method is labor-intensive and time-consuming, and its safety needs to be studied due to the use of hormones

Therefore, it has not been used in practice

The second method has high technical requirements, high labor costs, and is difficult to popularize and apply