Sesame photoperiod sensitive genic male sterile line and hybrid seed production method thereof

A hybrid seed production, light-sensitive technology, applied in the fields of botanical equipment and methods, plant genetic improvement, angiosperms/flowering plants, etc., can solve the limitations of large-scale promotion of sesame hybrids, incomplete removal of fertile plants, and fertility. Identify problems such as heavy workload, and achieve the effect of improving low utilization efficiency, increasing farmers' income and good seed production effect

Active Publication Date: 2015-05-13
HENAN SESAME RES CENT HENAN ACADEMY OF AGRI SCI
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Problems solved by technology

However, in the process of two-line seed production of Sesame GMMS in these two prior arts, about 50% of the fertile plants in the female parent line must be identified and pulled out at the initial flowering stage, and the workload of fertility identification is large and the cost of seed production is high. , and it is prone to problems such as incomplete removal of fertile plants and affecting the purity of seed production, which largely limits the large-scale promotion of sesame hybrids

Method used

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  • Sesame photoperiod sensitive genic male sterile line and hybrid seed production method thereof
  • Sesame photoperiod sensitive genic male sterile line and hybrid seed production method thereof
  • Sesame photoperiod sensitive genic male sterile line and hybrid seed production method thereof

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Effect test

Embodiment 1

[0022] 1. Sesame light-sensitive male sterile line

[0023] The sesame light-sensitive genic male sterile line Sipsms3041 was planted in the sesame experimental base of Henan Academy of Agricultural Sciences (Zhengzhou). Field observation confirmed that the stamens of the sterile line were green and had no powder or little powder. Take the flowers to be opened, Alexander staining observation shows that most of the pollen grains are abortive type, the ratio is more than 99%, see figure 1 -Left picture; under self-crossing conditions, only 2-3 capsules on a single plant are enlarged, generally without seeds, see figure 2 - Left image. In Hainan area, the male sterile line showed fine powder, with yellow-green stamens and a small amount of pollen. The staining observation of pollen grains shows that there are two types of pollen grains: normal type and aborted type, and the proportion of normal pollen is about 33%, see figure 1 - In the middle picture, the number of capsules...

Embodiment 2

[0028] In December 2012, Sipsms3041 was planted in the Sanya Sesame Experimental Base in winter under the condition of net isolation, and the sterile line was propagated at a density of 15,000 plants / mu. Under the condition of short light, the fertility of the light-sensitive male sterile line can be recovered to a certain extent, and it can bear fruit. After the seeds matured, the inbreds were harvested.

[0029]In June 2013, under the condition of natural isolation without planting other sesame varieties within 2 kilometers around, the light-sensitive male sterile line Sipsms3041 was used as the female parent, and the sesame variety "Danbag" was used as the male parent at a row ratio of 2:1 Planted at intervals in Zhengzhou Sesame Seed Production Base, see image 3 . Using natural peaking to achieve insect pollination and obtain hybrid F 1 . When the seeds are fully mature, the F on the sterile line plants are harvested. 1 Seeds are hybrids. In the summer of 2014, a sm...

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Abstract

The invention relates to a sesame photoperiod sensitive genic male sterile line and a hybrid seed production method thereof. The sensitive genic male sterile line Sipsms3041 is preserved in China Center for Type Culture Collection (CCTCC) on Nov.25th, 2014 and the preservation number of the sensitive genic male sterile line is CCTCC NO:P201413. The invention also discloses the hybrid seed production method of the sesame photoperiod sensitive genic male sterile line. According to the invention, the photoperiod sensitive genic male sterile line materials which are shown sterile under the long-day condition are used as female parents and the photoperiod sensitive genic male sterile line materials and male parents are planted at intervals to carry out hybrid seed production; hybrid seed purity of sesames obtained from the sterile line reaches over 95 percent.

Description

technical field [0001] The invention relates to a sesame sterile line and a hybrid seed production method thereof, in particular to a sesame light-sensitive nuclear male sterile line and a hybrid seed production method thereof. Background technique [0002] Sesame is an important high-quality oil crop and characteristic agricultural product in my country. my country's annual sesame planting area is 9 million mu, with a total output of about 700,000 tons, ranking first in the world and occupying an important position in international sesame production and trade. Sesame originated in the tropics, is warm and drought-tolerant, and is a short-day crop. In 1945, the Indian scholar Pal reported the phenomenon of heterosis in sesame for the first time, and the research results at home and abroad further confirmed that sesame does have strong heterosis in terms of yield, disease resistance and stress resistance. The hybrid F 1 The grain yield is 15-50% higher than that of the cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H5/12A01H1/02
Inventor 张海洋苗红梅魏利斌张战有李春段迎辉张体德王慧丽徐芳芳马琴
Owner HENAN SESAME RES CENT HENAN ACADEMY OF AGRI SCI
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