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Seed production method of oppositifolious maize collective seeds

A technology of corn and seeds, which is applied in the fields of botany equipment and methods, applications, plant genetic improvement, etc., can solve the problems of corn seed yield increase, and achieve the effects of facilitating field management, breaking the bottleneck of yield, and increasing yield

Inactive Publication Date: 2013-06-19
邹士杰 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the current situation that relying on conventional dominant breeding methods to solve the current situation that it is more and more difficult to increase the seed yield of maize, the present invention breaks the conventional breeding thinking and aims to provide a seed production method of opposite maize comprehensive seeds

Method used

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with embodiment:

[0022] It was obtained by crossing DM31301112 as the female parent and DF1516 as the male parent;

[0023] .The seed production method of a kind of opposite maize comprehensive species is characterized in that said female parent is the d line obtained by multi-generational self-crossing of a natural variation single plant of a farm variety in Xifeng County in 2001, and is in a safe isolation area , prepared d 31 × d 30 and d 11 × d 12 The hybrids D3130 and D1112 between the sister lines; then use D3130 as the female parent and D1112 as the male parent to carry out hybridization or backcrossing, and prepare the double cross hybrid between the sister lines DM31301112 as the female parent of the comprehensive seed;

[0024] The method for producing the opposite corn comprehensive seed is characterized in that the male parent is hybridized with the opposite corn by using a hybrid sel...

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Abstract

Provided is a seed production method of oppositifolious maize collective seeds. According to the seed production method of the oppositifolious maize collective seeds, the oppositifolious maize collective seeds are obtained through the method that DM 31301112 is hybridized with DF 1516, wherein the DM 31301112 serves as a female parent in seed production , the DF 1516 serves as a male parent seed production; the female parent is a double hybrid DM 31301112 of d 31* d 30 and d 11*d 12, the male parent is a hybrid DF 1516 of H 15*H 16; and an alternated seedling is removed when six or more leaves of the seedling fully stretch out. When the last four cob leaves of a paternal plant do not stretch out, a maternal plant is detasseled, and a subtending leaves on the upper portion of an ear grown from the maternal plant are cut off. Compared with an alternated maize hybrid, the oppositifolious maize collective seeds can increase yield in production.

Description

Technical field: [0001] The invention belongs to the field of discovery and utilization of new plant species or plant genetic breeding. Further speaking, it relates to a seed production method of opposite corn comprehensive species Background technique: [0002] At present, the representative varieties of corn hybrids include Zhengdan 958, Danyu 39, Xianyu 335 and so on. In the past 20 years, with the continuous efforts of various breeding units, my country's corn production has developed rapidly. However, due to stagnant or little increase in yield per unit area, the rate of increase in yield per unit area is extremely slow, with an average annual gain rate of only 0.8%, which is actually lower than the average annual growth rate of wheat (2%), and even lower than that of rape (2.4%) and cotton (3%), corn production has reached a bottleneck. This situation has aroused great concern of the governments of various countries. It is required to break the bottleneck of produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 邹士杰时跃明
Owner 邹士杰