Breeding process of high temperature resisting cotton hybrid

A hybrid, high-temperature-resistant technology, applied in the fields of botanical equipment and methods, complex mathematical operations, angiosperms/flowering plants, etc., can solve the problems of bell shedding, affecting the yield and quality of lint cotton, etc.

Inactive Publication Date: 2007-08-22
HUNAN AGRICULTURAL UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a new method for breeding high-temperature-resistant hybrid cotton varieties, to cultivate high-temperature-resistant cotton hybrids with strong boll-setting, high yield and strong adaptability, and to solve the problem of hybrid cotton ...

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  • Breeding process of high temperature resisting cotton hybrid
  • Breeding process of high temperature resisting cotton hybrid
  • Breeding process of high temperature resisting cotton hybrid

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Embodiment Construction

[0029] The following will be further clarified through the detailed description of specific embodiments, but it is not intended to limit the present invention, but only for illustration.

[0030] In 2004, conventional cotton varieties Sumian 12, Zhongmian 12, Sumian 16 and J011 (lines selected by the self-bred pedigree method of Xiangzamian 2) were used as female parents, respectively, and the transgenic Bt gene insect-resistant cotton lines Xinyoumian 68 (a high-quality line selected from the self-bred progeny of Lumianyan No. 22, a conventional insect-resistant cotton) and K-79 (a result obtained by systematic selection of conventional Bt-transgenic insect-resistant cotton GK-12 for multiple generations) 8 hybrid combinations (names are shown in Table 1). In 2005, 8 hybrid F1s were tested in a randomized block design, with a plot area of ​​10m 2 , each combination was repeated 3 to 5 times (repeated 3 times in this embodiment), the planting density was 1500 plants per mu, a...

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Abstract

The breeding process of high temperature resisting cotton hybrid belongs to the field of crop hybrid breeding technology. The breeding process includes the following steps: 1. selecting parents for hybridizing to obtain cotton hybrid F1; 2. planting cotton hybrid F1 based on the randomized block experiment design and field surveying single plant cotton boll number and boll forming rate; 3. indoor in vitro pollen culture to measure the pollen germination rate and pollen tube growth speed; and 4. screening through principal component analysis. The said process can culture high temperature resisting cotton hybrid with high yield, powerful adaptability and high cotton quality.

Description

technical field [0001] The invention relates to a method for breeding high-temperature-resistant cotton hybrids, which is specially used for breeding high-temperature-resistant cotton hybrids, and belongs to the field of stress-resistant breeding of crops. Background technique [0002] Global warming has aroused widespread concern among agricultural scientists. According to predictions, the temperature will rise by 1.4-5.8°C in the second half of this century, and extreme climates such as high temperature and drought will occur more frequently. As the global climate warms, high temperature stress has become an important factor affecting crop production. Simulation results show that if no measures are taken, by the second half of this century, the output of several major crops such as wheat, rice, and corn in my country may drop by up to 37%. In my country's cotton-growing areas, especially in the Yangtze River Basin, periodic heat damage above 35°C often occurs from July t...

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01H5/00G06F17/16
Inventor 刘志袁小玲陈金湘余筱南饶力群
Owner HUNAN AGRICULTURAL UNIV
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