Crops ›› 2016, Vol. 32 ›› Issue (1): 28-32.doi: 10.16035/j.issn.1001-7283.2016.01.006

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The Effect of Flowering Habits of CMS Lines in Hainan Ecological Conditions

Quan Dongxing,Meng Weiren,Jin Chenghai,Zhou Guangchun   

  1. Rice institute,Jilin Academy of Agricultural Sciences,Gongzhuling 136100,Jilin,China
  • Received:2015-11-13 Revised:2016-01-07 Online:2016-02-15 Published:2018-08-25
  • Contact: Guangchun Zhou

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Abstract:

With the CMS lines newly bred in japonica hybrid rice as materials, the flowering habits of CMS lines in Jilin and Hainan ecological conditions were studied. The results showed: The period from seeding to flowering of the sterile lines was significantly shortened, cutting down the most days of 34, the least days of 15 and the average days of 23.5days. The flowering time of sterile lines was postponed 1-2h in Hainan ecological condition, compared with Jilin condition. The average flowering rate of spikelet before noon was significantly reduced 47.4%, with the most reduction of 81.1%.

Key words: Hybrid rice, CMS lines, Flowering habits

Table 1

The experiment varieties and it’s agronomy character"

材料Materials 编号
No.		 类型Type 来源Origin 生育期（d）
Growth period		 株高（cm）
Plant height		 分蘖
Tiller
105A A1 不育系Sterile lines 辽宁省Liaoning 150 105.4 18.2
61A A2 不育系Sterile lines 辽宁省Liaoning 147 100.3 19.4
846A A3 不育系Sterile lines 辽宁省Liaoning 145 101.5 20.1
长白17A Changbai 17A A4 不育系Sterile lines 吉林省Jilin 128 102.3 17.6
T176A A5 不育系Sterile lines 吉林省Jilin 132 96.4 22.3
BL-7A A6 不育系Sterile lines 黑龙江省Heilongjiang 125 95.2 17.3
吉粳101A Jijing101A A8 不育系Sterile lines 吉林省Jilin 135 92.5 23.6
松粘5022A Songnian 5022A A12 不育系Sterile lines 黑龙江省Heilongjiang 128 96.6 20.4
C135 C1 恢复系Restorer lines 辽宁省Liaoning 145 108.6 14.3
C258 C2 恢复系Restorer lines 辽宁省Liaoning 142 96.4 16.8
吉粳85号 Jijing 85 C3 恢复系Restorer lines 吉林省Jilin 140 96.6 20.4

Table 2

The temperature and humidity in Hainan and Jilin during flowering"

材料Materials A1 A2 A3 A4 A5 A6 A8 A12 C1 C2 C3
在海南始花时间（月/日）
Flower start time in Hainan		 1/28 1/27 1/20 1/12 1/18 1/8 1/16 2/2 2/2 2/5 1/15
在海南播始历期（d）
Sow to flower days in Hainan		 84 83 76 68 74 64 72 89 89 92 71
在吉林始花时间（月/日）
Flower start time in Jilin		 8/4 8/5 8/1 7/26 7/30 7/27 7/29 8/12 8/10 8/8 7/25
在吉林播始历期（d）
Sow to flower days in Jilin		 105 106 102 96 100 98 99 113 111 109 95
在海南比在吉林（d）
Contrast to Jilin		 -21 -23 -26 -28 -26 -34 -27 -24 -22 -17 -24

Table 3

The influence of Hainan on ecological conditions on the beginning period of sterile line and restorer line"

8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00
海南温度（℃）Temperature in Hainan 19.5 22.5 24.6 25.5 27.0 30.4 29.8 28.4 24.0
吉林温度（℃）Temperature in Jilin 22.4 24.2 26.8 30.6 31.2 29.4 28.2 26.5 25.2
海南湿度（%）Humidity in Hainan 91 85 72 70 68 59 55 57 71
吉林湿度（%）Humidity in Jilin 86 84 82 78 75 82 85 86 84

Table 4

Flowering duration of CMS lines and restorer lines d"

A1 A2 A3 A4 A5 A6 A8 A12 C1 C2 C3
单穗开花历期（吉林）
Flower days spike(Jilin)		 7.6 7.2 6.4 7.1 9.8 6.5 7.4 7.2 7.1 6.8 5.8
单穗开花历期（海南）
Flower days spike(Hainan)		 6.5 6.8 5.6 7.8 8.5 6.3 7.3 6.0 6.2 7.0 6.6
单株开花历期（吉林）
Flower days single plant(Jilin)		 14.3 16.7 15.8 15.5 16.7 17.6 14.2 15.4 16.3 14.7 13.6
单株开花历期（海南）
Flower days single plant(Hainan)		 13.2 15.0 14.6 16.6 15.8 17.4 14.3 14.0 15.0 14.8 14.6

Table 5

The daily flowering ratio of the single spike"

抽穗后天数（d） 1 2 3 4 5 6 7 8 9 10
A1（吉林Jilin） 9.2 19.6 23.1 22.8 38.6 26.7 18.4 4.8 1.2
A1（海南Hainan） 4.4 6.5 11.6 23.6 13.6 25.4 18.0 15.4 2.2 0.2
A2（吉林Jilin） 4.3 16.8 29.4 21.7 34.6 22.6 12.7 9.2 0.4
A2（海南Hainan） 3.6 7.0 10.4 32.4 5.8 6.8 13.8 5.6 1.0
A3（吉林Jilin） 4.6 16.8 24.5 14.2 16.8 10.2 3.6 0.6
A3（海南Hainan） 6.4 15.0 23.6 22.3 17.2 11.4 3.5 0.4
A4（吉林Jilin） 15.8 35.4 25.6 38.8 35.2 28.6 4.0 1.4
A4（海南Hainan） 12.4 15.6 23.2 15.0 15.2 13.6 5.6 1.6
A5（吉林Jilin） 4.8 19.6 28.2 36.4 32.8 26.5 7.6 0.4
A5（海南Hainan） 5.6 16.8 27.5 25.4 23.0 13.6 4.1
A6（吉林Jilin） 3.4 26.6 28.4 31.2 28.3 26.7 18.9 12.5 4.0 2.1
A6（海南Hainan） 3.0 10.3 10.5 21.5 21.0 9.8 7.2 2.4 1.0
A8（吉林Jilin） 8.2 36.7 32.4 28.5 26.6 8.4 1.6 0.2
A8（海南Hainan） 9.0 25.6 35.8 22.5 18.6 9.3 3.0 1.2
A12（吉林Jilin） 2.8 16.7 27.5 38.2 35.7 15.4 3.3 3.4 1.3
A12（海南Hainan） 4.0 15.2 26.6 23.5 15.8 10.2 3.0
C1（吉林Jilin） 5.6 24.2 36.6 42.2 30.4 16.6 5.0 0.2
C1（海南Hainan） 9.8 14.5 26.8 23.5 11.2 6.8 1.0
C2（吉林Jilin） 11.2 28.4 44.2 36.2 18.4 6.6 0.8
C2（海南Hainan） 8.6 18.4 23.6 21.6 20.5 10.4 3.2
C3（吉林Jilin） 10.2 32.4 46.3 34.6 16.2 1.2
C3（海南Hainan） 10.3 12.4 16.3 23.5 17.6 12.4 4.5 0.2

Table 6

CMS lines flower habit in Hainan and Jilin"

始花时间
Flower start time		 终花时间
Flower end time		 开花高峰
Flower climax		 午前花率(%)
Flower ratio before noon		 日开花总数
Flower amount
A1（海南Hainan） 11∶00 15∶30 14∶00 7.2 13.8
A1（吉林Jilin） 10∶00 13∶30 11∶30 60.7 15.0
A2（海南Hainan） 10∶30 15∶00 13∶30 12.7 14.2
A2（吉林Jilin） 9∶30 12∶30 11∶00 85.2 15.6
A3（海南Hainan） 11∶00 15∶30 14∶00 12.3 16.2
A3（吉林Jilin） 9∶30 12∶30 11∶00 80.7 16.6
A4（海南Hainan） 11∶00 15∶30 14∶00 9.1 15.4
A4（吉林Jilin） 10∶00 13∶30 12∶00 35.3 15.2
A5（海南Hainan） 11∶30 15∶30 13∶30 8.1 14.6
A5（吉林Jilin） 9∶30 13∶30 12∶00 52.5 14.2
A6（海南Hainan） 11∶00 15∶30 13∶30 6.3 12.6
A6（吉林Jilin） 10∶00 13∶30 12∶00 33.6 15.2
A8（海南Hainan） 10∶30 15∶00 13∶30 16.2 14.8
A8（吉林Jilin） 10∶00 13∶00 12∶00 39.4 17.6
A12（海南Hainan） 11∶30 15∶30 14∶00 10.4 15.4
A12（吉林Jilin） 9∶30 13∶30 11∶30 71.4 17.6
C1（海南Hainan） 11∶00 15∶30 14∶00 10.9 12.6
C1（吉林Jilin） 9∶30 13∶30 11∶30 62.1 20.6
C2（海南Hainan） 11∶00 15∶00 13∶30 11.3 14.2
C2（吉林Jilin） 9∶00 13∶00 11∶00 63.9 26.6
C3（海南Hainan） 11∶00 15∶30 13∶30 12.0 15.0
C3（吉林Jilin） 9∶00 13∶30 11∶00 70.8 21.2
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