Crops ›› 2018, Vol. 34 ›› Issue (3): 174-179.doi: 10.16035/j.issn.1001-7283.2018.03.027

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Feasibility Analysis of BS Series Hybrid Wheat Seed Production in Weinan of Shaanxi Province

Wang Zheng,Chen Zhaobo,Zhang Shengquan,Ren Liping,Gao Xinhuan,Ye Zhijie,Zhang Fengting   

  1. Beijing Hybrid Wheat Engineering Technology Research Center, Beijing 100097, China
  • Received:2017-11-30 Revised:2018-04-11 Online:2018-06-20 Published:2018-06-20

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Abstract:

Efficient seed production techniques are the key factors that affect the industrialization of hybrid wheat. The exploration of suitable seed production area is an important part of seed production technology research and the improvement of seed production. The traditional production area of BS series hybrid wheat based on photo-thermo-sensitive sterility was more single and concentrated in the Fuyang area of Anhui Province. In order to increase the seed production areas of hybrid wheat and improve the technical level of seed production, the climate of Weinan area was analysed and compared with Fuyang the traditional wheat seed production area in this study. The results showed that the average temperature of growing wheat in Weinan is lower than that of Fuyang by 1.3℃ and the difference of average temperature in important period of fertility transfomation is less than 1℃; the duration of possible sunshine are similar in the two areas; the precipitation in the key period of wheat seed production was significantly reduced (41.7% lower than that in Fuyang area), which was suitable for seed production. On this basis, we conducted the fertility test and seed production of BS series photo-thermo-sensitive genic male sterile lines in Weinan, Shaanxi Province. The results showed that the majority of BS lines in this area had self-fertility less than 0.5 grains per spike and the sterility rate reached 98%. The average number of outcrossed seedlings per plant reached 14.4 to 20.7 grains per spike, seed production more than 3 000kg/hm 2, and seed purity of 95% or more, these are all meet the hybrid wheat seed production requirements. Weinan could be an appropriate alternative area for BS hybrid wheat production.

Key words: Hybrid wheat, BS series of sterile lines, Adaptability of seed production

Table 1

Monthly mean temperature of Fuyang and Weinan in wheat growth period ℃"

地区Site 月份Month 平均
Average
10 11 12 1 2 3 4 5 6
阜阳Fuyang 16.5 10.0 3.9 1.9 4.3 9.0 15.9 21.2 25.5 12.0
渭南Weinan 14.1 7.2 1.5 0.3 3.5 8.6 15.3 20.4 25.2 10.7
两地差异Difference 2.4 2.8 2.4 1.6 0.8 0.4 0.6 0.8 0.3 1.3

Table 2

Monthly maximum temperature of Fuyang and Weinan in winter wheat growth period ℃"

地点Site 月份Month
10 11 12 1 2 3 4 5 6
阜阳Fuyang 22.1 15.7 9.1 6.7 9.4 14.1 21.5 26.7 30.6
渭南Weinan 19.3 12.5 6.3 5.1 8.9 14.3 21.5 26.6 31.4
两地差异Difference 2.8 3.2 2.8 1.6 0.5 -0.2 0.0 0.1 -0.8

Fig.1

Daily mean temperature of the two areas in spikelet differentiation"

Table 3

Duration of possible sunshine of Fuyang and Weinan in spikelet differentiation h"

日期Date 阜阳Fuyang 渭南Weinan
3月15日 11.90 -
3月20日 12.08 12.08
3月25日 12.26 12.27
3月30日 12.42 12.44
4月5日 12.62 12.65
4月10日 - 12.83
平均Average 12.27 12.46

Table 4

Analysis of precipitation during winter wheat growth period mm"

地点Site 月份Month
10 11 12 1 2 3 4 5 6
阜阳Fuyang 51 37 20 26 31 55 61 84 147
渭南Weinan 62 26 7 7 10 26 45 58 58

Table 5

Annual fertility of backbone CMS lines in Weinan"

不育系
Sterile line		 每穗结实数Seeds of outcross per spike 平均不育度(%)
Mean sterility
2013/2014 2014/2015 2015/2016 平均Average
BS366 0.5c 0.3a 0.7b 0.5 98.4
BS1086 0.8b 0a 2.1a 1.0 96.7
BS400 4.1a - - 4.1 86.4
BS1453 0.3c 0.1b 0.7b 0.4 98.7
BS1745-1 0.3c 0.4a 0.5b 0.4 98.7

Table 6

Outcrossing and seed yield of main hybrid wheat varieties in Weinan"

品种Variety 每穗结实数Seeds of outcross per spike 种子产量Seed yield (kg/hm2)
2013/2014 2014/2015 2015/2016 平均Average 2013/2014 2014/2015 2015/2016 平均Average
京麦7号Jingmai No.7 19.0 13.2 15.1 15.8 3 700 2 440 2 870 3 003
京麦8号Jingmai No.8 15.3 10.4 17.6 14.4 3 160 2 130 3 570 2 953
京麦9号Jingmai No.9 21.3 14.6 26.3 20.7 4 080 2 570 5 060 3 903
1773 15.9 - 18.6 17.3 3 170 - 3 700 3 435
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