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Rice Science ›› 2015, Vol. 22 ›› Issue (2): 81-88.DOI: 10.1016/S1672-6308(14)60286-9

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  • 收稿日期:2014-09-02 接受日期:2014-12-09 出版日期:2015-03-10 发布日期:2015-01-27

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链接本文: http://www.ricesci.org/CN/10.1016/S1672-6308(14)60286-9

               http://www.ricesci.org/CN/Y2015/V22/I2/81

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Fig. 1. Effects of short-day treatment on plant development of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11. A, Rice plants were covered by the box wrapped with shade cloth; B, PA64S; C, LYP9; D, 93-11. Arrows showed that the panicles in the short-day length conditions headed earlier than those in the natural-day length conditions.

Fig. 1. Effects of short-day treatment on plant development of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11. A, Rice plants were covered by the box wrapped with shade cloth; B, PA64S; C, LYP9; D, 93-11. Arrows showed that the panicles in the short-day length conditions headed earlier than those in the natural-day length conditions.

Table 1 Treatments in the natural- and short-day length conditions in hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in 2012, Changsha, China.
Variety Treatment Days from Sowing to heading (d) Days from sowing to harvest (d) Treatment time (Month-Day) Short-day treatment (d)
PA64S Natural-day 77 NA a
Short-day 70 NA 07-21 to 08-24 34
LYP9 Natural-day 94 133
Short-day 85 116 07-26 to 08-27 32
Nov-93 Natural-day 94 133
Short-day 87 116 07-22 to 08-28 37

Table 1 Treatments in the natural- and short-day length conditions in hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in 2012, Changsha, China.

Variety Treatment Days from Sowing to heading (d) Days from sowing to harvest (d) Treatment time (Month-Day) Short-day treatment (d)
PA64S Natural-day 77 NA a
Short-day 70 NA 07-21 to 08-24 34
LYP9 Natural-day 94 133
Short-day 85 116 07-26 to 08-27 32
Nov-93 Natural-day 94 133
Short-day 87 116 07-22 to 08-28 37
Table 2 Growth stages of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in 2012-2013, Sanya, China.
Variety Sowing date (Year-Month-Day) Initial heading date Full heading date Days from sowing to full heading Days from sowing to harvest
(Year-Month-Day) (Year-Month-Day) (d) (d)
PA64S 2012/12/20 2013-03-25 87
LYP9 2012/12/10 2013/3/15 2013/4/13 89 124
Nov-93 2012/12/10 2013-03-25 2013/4/25 102 136

Table 2 Growth stages of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in 2012-2013, Sanya, China.

Variety Sowing date (Year-Month-Day) Initial heading date Full heading date Days from sowing to full heading Days from sowing to harvest
(Year-Month-Day) (Year-Month-Day) (d) (d)
PA64S 2012/12/20 2013-03-25 87
LYP9 2012/12/10 2013/3/15 2013/4/13 89 124
Nov-93 2012/12/10 2013-03-25 2013/4/25 102 136
Fig. 2. Effects of short-day treatment on development of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11.ND, Natural-day length conditions; SD, Short-day length conditions.

Fig. 2. Effects of short-day treatment on development of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11.ND, Natural-day length conditions; SD, Short-day length conditions.

Table 3 Yield component characters of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in Changsha, China.
Variety and heterosis Treatment Plant height Effective panicle number per plant Grain number per panicle Seed-setting rate 1000-grain weight
(cm) (%) (g)
PA64S Natural-day 83.8 ± 3.3 Bb 10.6 ± 2.0 Bb 177.1 ± 18.1 Aa
PA64S Short-day 80.2 ± 3.5 Aa 10.6 ± 3.9 Bb 159.4 ± 24.9 ABab
LYP9 Natural-day 124.7 ± 4.7 Fe 8.2 ± 1.7 Aa 190.3 ± 23.2 ABb 65.0 Aa 26.42 ± 0.72 Aa
LYP9 Short-day 118.3 ± 3.8 CDc 7.3 ± 1.6 Aa 179.0 ± 21.5 Bb 84.0 Bb 27.25 ± 0.75 Ab
Nov-93 Natural-day 120.7 ± 4.5 Dd 7.3 ± 1.5 Aa 178.2 ± 41.1 Bb 80.0 BCc 31.33 ± 1.32 Bc
Nov-93 Short-day 116.6 ± 4.9 Cc 7.3 ± 1.6 Aa 143.4 ± 41.0 Bb 88.0 Cc 31.44 ± 0.72 Bc
MPH (%) Natural-day 22 7.1
HPH (%) Natural-day 3.3 6.8
MPH (%) Short-day 20.3 18.2
HPH (%) Short-day 1.5 12.3

Table 3 Yield component characters of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in Changsha, China.

Variety and heterosis Treatment Plant height Effective panicle number per plant Grain number per panicle Seed-setting rate 1000-grain weight
(cm) (%) (g)
PA64S Natural-day 83.8 ± 3.3 Bb 10.6 ± 2.0 Bb 177.1 ± 18.1 Aa
PA64S Short-day 80.2 ± 3.5 Aa 10.6 ± 3.9 Bb 159.4 ± 24.9 ABab
LYP9 Natural-day 124.7 ± 4.7 Fe 8.2 ± 1.7 Aa 190.3 ± 23.2 ABb 65.0 Aa 26.42 ± 0.72 Aa
LYP9 Short-day 118.3 ± 3.8 CDc 7.3 ± 1.6 Aa 179.0 ± 21.5 Bb 84.0 Bb 27.25 ± 0.75 Ab
Nov-93 Natural-day 120.7 ± 4.5 Dd 7.3 ± 1.5 Aa 178.2 ± 41.1 Bb 80.0 BCc 31.33 ± 1.32 Bc
Nov-93 Short-day 116.6 ± 4.9 Cc 7.3 ± 1.6 Aa 143.4 ± 41.0 Bb 88.0 Cc 31.44 ± 0.72 Bc
MPH (%) Natural-day 22 7.1
HPH (%) Natural-day 3.3 6.8
MPH (%) Short-day 20.3 18.2
HPH (%) Short-day 1.5 12.3
Fig. 3. Effects of short-day treatment on hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11.A, Plant height; B, Average grain number of per panicle; C, Seed-setting rate. ND, Natural-day length conditions; SD, Short-day length conditions.

Fig. 3. Effects of short-day treatment on hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11.A, Plant height; B, Average grain number of per panicle; C, Seed-setting rate. ND, Natural-day length conditions; SD, Short-day length conditions.

Table 4 Economic characters of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in 2012-2013, Sanya, China.
Variety and heterosis Plant height Effective panicle number per plant Average grain number per panicle Seed-setting rate 1000-grain weight
(cm) (%) (g)
PA64S 65.8 ± 3. 7 Aa 8.3 ± 3.2 ab 153.3 ± 21.6 Aa
LYP9 96.4 ± 4.0 Cc 10.4 ± 3.7 b 183.0 ± 21.1 Bb 72 26.59
Nov-93 90.8 ± 4.9 Bb 7.1 ± 1.8 a 156.2 ± 4.7 ABa 58 28.71
MPH (%) 23.2 35.5 18.2
HPH (%) 6.2 2.6 17.2

Table 4 Economic characters of hybrid rice Liangyoupeijiu (LYP9) and its parents Pei’ai 64S (PA64S) and 93-11 in 2012-2013, Sanya, China.

Variety and heterosis Plant height Effective panicle number per plant Average grain number per panicle Seed-setting rate 1000-grain weight
(cm) (%) (g)
PA64S 65.8 ± 3. 7 Aa 8.3 ± 3.2 ab 153.3 ± 21.6 Aa
LYP9 96.4 ± 4.0 Cc 10.4 ± 3.7 b 183.0 ± 21.1 Bb 72 26.59
Nov-93 90.8 ± 4.9 Bb 7.1 ± 1.8 a 156.2 ± 4.7 ABa 58 28.71
MPH (%) 23.2 35.5 18.2
HPH (%) 6.2 2.6 17.2

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