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Method for increasing maturing rate in sugarcane hybrid seed production

A technology for hybrid seed production and seed setting rate, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of low seed setting rate and large parent dosage, etc., to prolong the flowering period of flowers and ears, and improve the seed setting rate. , the effect of low cost

Active Publication Date: 2015-04-29
SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the deficiencies in the prior art and provide a method for improving the seed-setting rate of sugarcane hybridization, which can effectively solve the problems of large amount of parents and low seed-setting rate in the current sugarcane hybrid seed production process

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for improving the seed setting rate of sugarcane hybrid seed production, comprising the steps of:

[0032] Step (1), according to the combination plan, when the male and female parents have eared and the florets start to open, intercept the plants from the lower part of the regenerated roots generated by the high-branch layering and put them in the cultivation ditch in the hybridization greenhouse for cultivation with the culture medium, and hybridize The ambient air temperature in the greenhouse is required to be 18-28°C and the relative humidity above 80%;

[0033] Step (2), the parents are placed in the isolation cloth cover to prevent the pollen from messing up, and the bottom of the male parent's flower spike should be 5-10 cm higher than the highest point of the female parent's flower spike;

[0034] In step (3), the pollination operation is carried out twice a day during the peak period when florets are open. First, gently shake the female parent to scat...

Embodiment 2

[0047] A method for improving the seed setting rate of sugarcane hybrid seed production, comprising the steps of:

[0048] Step (1), according to the combination plan, when the male and female parents have eared and the florets start to open, intercept the plants from the lower part of the regenerated roots generated by the high-branch layering and put them in the cultivation ditch in the hybridization greenhouse for cultivation with the culture medium, and hybridize The ambient air temperature in the greenhouse is required to be 18-28°C and the relative humidity above 80%;

[0049] Step (2), the parents are placed in the isolation cloth cover to prevent the pollen from messing up, and the bottom of the male parent's flower spike should be 5-10 cm higher than the highest point of the female parent's flower spike;

[0050] In step (3), the pollination operation is generally carried out twice a day from 10:00 am to 12:00 am during the peak period when the florets are open. First...

Embodiment 3

[0063] A method for improving the seed setting rate of sugarcane hybrid seed production, comprising the steps of:

[0064] Step (1), according to the combination plan, when the male and female parents have eared and the florets start to open, intercept the plants from the lower part of the regenerated roots generated by the high-branch layering and put them in the cultivation ditch in the hybridization greenhouse for cultivation with the culture medium, and hybridize The ambient air temperature in the greenhouse is required to be 18-28°C and the relative humidity above 80%;

[0065] Step (2), the parents are placed in the isolation cloth cover to prevent the pollen from messing up, and the bottom of the male parent's flower spike should be 5-10 cm higher than the highest point of the female parent's flower spike;

[0066] In step (3), the pollination operation is generally carried out twice a day from 10:00 am to 12:00 am during the peak period when the florets are open. First...

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Abstract

The invention relates to a method for increasing a maturing rate in sugarcane hybrid seed production, belonging to the technical field of agricultural cultivation. A generated regeneration plant after a hybrid parent is subjected to air layering in sugarcane hybrid seed production is in culture solution in a culture stage; the florescence of flower spikes of the hybrid parent is prolonged by adjusting the temperature, the nutrients and the dissolved oxygen of the culture solution; simultaneously, the pollen quantity and the developmental rate can also be increased; and finally, the maturing rate of hybrid seeds is increased. The temperature of the culture solution is 15-20 DEG C; the nutrients respectively contain 145-160mg / L of nitrogen, 38-42mg / L of phosphorus, 285-315mg / L of potassium and 3.8-4.2mg / L of boron; and the content of the dissolved oxygen is 4-8mg / L. Experiments show that the florescence of flower spikes of the sugarcane hybrid parent can be effectively prolonged by 4-7 days; simultaneously, the pollen quantity can be increased by 20-50%; the maturing rate of the hybrid seeds can be increased by 10-20%; and the method disclosed by the invention is very applied to sugarcane hybrid seed production.

Description

Technical field [0001] The present invention is the field of agricultural planting technology, which involves a method that increases the strong rate of sugarcane hybridization. Background technique [0002] Sugarcane is an important sugar crop in my country. The selection of new varieties of sugarcane is an important guarantee for the sustainable development of the sucrose industry.In the process of selection of new sugarcane varieties, hybridization is the primary part of the selection of varieties. Whether it can obtain sufficient amount of hybrid seeds directly affects the efficiency and success or failure of the selection of new varieties.The conventional method of sugarcane hybridization is to first use the pro -branches to cultivate regenerative root plants to be used. When the sugar cane has been pumped and the small flowers begin to open, intercept the renewable plants from the high branches and pressure strips for hydroponic.The father's book is placed in the isolation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 安汝东周清明孙有芳杨李和董立华桃联安经艳芬边芯俞华先郎荣斌冯尉瞿林
Owner SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI
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