Tillering characteristics and its relationships with population productivity of japonica rice Nanjing 9108 under salinity stress
WEI Huan-He1, GE Jia-Lin1, ZHANG Xu-Bin1, MENG Tian-Yao2, LU Yu1, LI Xin-Yue1, TAO Yuan1, DING En-Hao1, CHEN Ying-Long1, DAI Qi-Gen,1,*1Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, China 2Joint International Research Laboratory of Agriculture and Agro-product Safety, Ministry of Education/Institute of Agricultural Science and Technological Development, Yangzhou University, Yangzhou 225009, Jiangsu, China
National Key Technology Support Program of China.2015BAD01B03 Key Research and Development Program of Jiangsu Province.BE2015337 Key Research and Development Program of Jiangsu Province.BE2016370 National Natural Science Foundation of China.31901448 Natural Science Foundation of the Jiangsu Higher Education Institutions of China.19KJB210004 Priority Academic Program Development of Jiangsu Higher Education Institutions
Abstract This study was conducted to clarify the characteristics for occurrence of rice tillers, its dominant leaf positions, and panicle formation under salinity stress, and to provide a basis for the rational utilization and regulation of rice tillers for high-yield cultivation methods in tidal flat area. Conventional japonica rice Nanjing 9108 was used with three salinity treatments, namely, Control (CK, 0 salt concentration), Medium-salinity stress (MS, 0.15% salt concentration), and high-salinity stress (HS, 0.3% salt concentration) to compare the tillering and panicle formation characteristics and its contribution to population yield under salinity stress. As a result, the average yields (t hm-2) of CK, MS, and HS were 9.7, 7.4, and 4.2 across two years, respectively; the number of panicles, spikelets per panicle, percentage of filled grains, and 1000-grain weight in MS and HS treatments were significantly lower than those in CK. Compared with CK, the number of tillers at jointing, heading, and maturity and percentage of productive tillers in MS and HS treatments were decreased. For CK, the primary tillers emerged from the 3rd leaf to 7th leaf on the main stem, with higher tiller emerging rate and more panicles from the 4th leaf to 6th leaf among them, and secondary tillers mainly emerged and earbeared from 1/4 and 1/5 tiller position; as for MS and HS, tillers are mainly primary ones emerging from the 4th to 6th leaf as the dominant position for the tiller occurrence and earbearing. The mean value of panicle length, total grains, grain density, and number of grains and its total grains on the primary and secondary branches in MS and HS treatments were both lower than those in CK. Our results suggest that, salinity stress caused lower number of panicles per plant, inferior growth of individuals and populations, smaller panicle types, and finally lower grain yield. Keywords：salinity stress;rice;tillering characteristics;population productivity
PDF (329KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 韦还和, 葛佳琳, 张徐彬, 孟天瑶, 陆钰, 李心月, 陶源, 丁恩浩, 陈英龙, 戴其根. 盐胁迫下粳稻品种南粳9108分蘖特性及其与群体生产力的关系[J]. 作物学报, 2020, 46(8): 1238-1247. doi:10.3724/SP.J.1006.2020.02001 WEI Huan-He, GE Jia-Lin, ZHANG Xu-Bin, MENG Tian-Yao, LU Yu, LI Xin-Yue, TAO Yuan, DING En-Hao, CHEN Ying-Long, DAI Qi-Gen. Tillering characteristics and its relationships with population productivity of japonica rice Nanjing 9108 under salinity stress[J]. Acta Agronomica Sinica, 2020, 46(8): 1238-1247. doi:10.3724/SP.J.1006.2020.02001
Table 1 表1 表1盐胁迫对水稻产量及其构成因素的影响 Table 1Effects of salinity stress on rice grain yield and its components
年份 Year
处理 Treatment
穗数 Number of panicles (×104 hm-2)
每穗粒数 Spikelets per panicle
颖花量 Number of spikelets (×107 hm-2)
结实率 Percentage of filled grains (%)
千粒重 1000- grain weight (g)
实产 Actual yield (t hm-2)
成熟期 干物重 Biomass accumulation at maturity (t hm-2)
收获 指数 Harvest index
2018
对照 CK
359.5 a
133.6 a
48.0 a
90.5 a
23.9 a
9.7 a
16.6 a
0.503 c
中盐 MS
335.1 b
112.4 b
37.7 b
88.7 ab
22.7 b
7.3 b
12.0 b
0.524 b
高盐 HS
293.7 c
87.2 c
25.6 c
82.6 b
21.2 c
4.3 c
6.7 c
0.549 a
2019
对照 CK
344.3 a
135.3 a
46.6 a
91.4 a
24.2 a
9.6 a
16.2 a
0.511 c
中盐 MS
323.1 b
115.7 b
37.4 b
88.2 b
23.1 b
7.4 b
11.9 b
0.533 b
高盐 HS
277.5 c
84.9 c
23.6 c
83.5 c
21.6 c
4.1 c
6.4 c
0.553 a
CK: control; MS: medium-salinity stress; HS: high-salinity stress. Values within the same column and the same year followed by different lowercase are significantly different at the 5% probability level. CK: 对照; MS: 中盐; HS: 高盐。标以不同小写字母的值在同一年份同一列中5%水平差异显著。
Table 2 表2 表2盐胁迫对水稻关键生育期群体茎蘖数的影响 Table 2Effects of salinity stress on tiller number at the main growth stages of rice population
年份 Year
处理 Treatment
群体茎蘖数 Tiller number of rice population (×104 hm-2)
拔节期Jointing
抽穗期Heading
成熟期Maturity
2018
对照 CK
459.1 a
365.9 a
359.5 a
中盐 MS
443.3 b
351.5 b
335.1 b
高盐 HS
404.5 c
314.3 c
293.7 c
2019
对照 CK
450.1 a
350.4 a
344.3 a
中盐 MS
439.6 b
339.1 b
323.1 b
高盐 HS
388.7 c
296.5 c
277.5 c
CK: control; MS: medium-salinity stress; HS: high-salinity stress. Values within the same column and the same year followed by different lowercase are significantly different at the 5% probability level. CK: 对照; MS: 中盐; HS: 高盐。标以不同小写字母的值在同一年份同一列中5%水平差异显著。
CK: 对照; MS: 中盐; HS: 高盐。处理间标以不同小写字母的值在5%水平差异显著。 Fig. 1Effects of salinity stress on percentage of productive tillers of rice
CK: control; MS: medium-salinity stress; HS: high-salinity stress. Bars superscripted by different lowercase are significantly different at the 5% probability level between treatments.
Table 4 表4 表4盐胁迫下水稻单株成穗数的茎蘖组成 Table 4Panicles composition of stems and tillers of rice under salinity stress
叶位 Leaf position
对照 CK
中盐 MS
高盐 HS
个数 Number
比例 Rate (%)
个数 Number
比例 Rate (%)
个数 Number
比例 Rate (%)
单株成穗数 No. of productive tillers per plant
4.61 a
4.00 b
3.50 c
主穗Main stem (0/0)
1.00
21.69
1.00
25.00
1.00
28.57
3/0
0.11
2.41
0.06
1.39
4/0
0.67
14.46
0.61
15.28
0.50
14.29
5/0
0.89
19.28
0.89
22.22
0.83
23.81
6/0
1.00
21.69
1.00
25.00
0.94
26.98
7/0
0.22
4.82
0.11
2.78
0.06
1.59
一次分蘖合计 Primary tillers in total
2.89
62.67
2.67
66.67
2.33
66.67
1/4
0.33
7.24
0.17
4.17
0.11
3.17
2/4
0.06
1.21
0.06
1.39
3/4
0.06
1.21
1/5
0.22
4.78
0.06
1.39
0.06
1.59
1/6
0.06
1.21
0.06
1.39
二次分蘖合计 Secondary tillers in total
0.72
15.64
0.33
8.33
0.17
4.76
CK: control; MS: medium-salinity stress; HS: high-salinity stress. Values followed by different lowercase are significantly different at the 5% probability level. CK: 对照; MS: 中盐; HS: 高盐。标以不同小写字母的值在5%水平差异显著。
Table 5 表5 表5盐胁迫下水稻各叶位茎蘖对群体产量的贡献 Table 5Contribution of stems and tillers in each leaf position of rice under salinity stress
叶位 Leaf position
对照 CK
中盐 MS
高盐 HS
产量 Yield (t hm-2)
比例 Rate (%)
产量 Yield (t hm-2)
比例 Rate (%)
产量 Yield (t hm-2)
比例 Rate (%)
群体产量 Population productivity
9.65 a
7.35 b
4.20 c
主穗Main stem (0/0)
2.32
24.05
2.12
28.86
1.36
32.45
3/0
0.22
2.31
0.10
1.33
4/0
1.33
13.76
1.06
14.44
0.51
12.18
5/0
1.95
20.20
1.65
22.48
1.01
24.16
6/0
2.18
22.64
1.75
23.83
1.15
27.37
7/0
0.38
3.93
0.17
2.25
0.04
0.89
一次分蘖合计 Primary tillers in total
6.06
62.84
4.73
64.34
2.71
64.61
1/4
0.65
6.76
0.27
3.66
0.08
1.92
2/4
0.09
0.91
0.07
0.99
3/4
0.08
0.86
1/5
0.36
3.72
0.08
1.12
0.04
1.02
1/6
0.08
0.86
0.08
1.02
二次分蘖合计 Secondary tillers in total
1.27
13.11
0.50
6.80
0.12
2.94
CK: control; MS: medium-salinity stress; HS: high-salinity stress. Values followed by different lowercase are significantly different at the 5% probability level. CK: 对照; MS: 中盐; HS: 高盐。标以不同小写字母的值在5%水平差异显著。
Table 6 表6 表6盐胁迫对水稻各叶位茎蘖穗部性状的影响 Table 6Effects of salinity stress on panicles traits of stems and tillers in each leaf position of rice
处理 Treatment
叶位 Leaf position
穗长 PL (cm)
总粒数 TG
结实率 PFG (%)
着粒密度 GD (grain cm-1)
一次枝梗 Primary branch
二次枝梗 Secondary branch
枝粳数 NB
枝梗粒数 TG
枝粳数 NB
枝梗粒数 TG
对照 CK
0/0
18.2
161.3
91.1
8.9
12.0
74.1
30.0
87.2
3/0
16.4
139.8
90.9
8.5
12.0
72.9
22.0
66.9
4/0
17.2
141.6
89.1
8.2
13.0
78.7
24.0
62.9
5/0
18.1
155.2
89.5
8.6
13.0
77.4
28.0
77.8
6/0
17.5
153.4
90.2
8.8
12.0
76.8
26.0
76.6
7/0
16.7
122.4
88.2
7.3
10.0
63.4
21.0
59.0
1/4
16.2
139.8
88.6
8.6
11.0
66.7
24.0
73.1
2/4
15.8
114.1
87.6
7.2
10.0
58.7
22.0
55.4
3/4
14.8
106.9
88.5
7.2
11.0
62.3
17.0
44.6
1/5
15.3
116.5
88.7
7.6
11.0
62.4
18.0
54.1
1/6
14.6
107.0
88.9
7.3
10.0
60.8
16.0
46.2
平均值 Mean
16.4 a
132.5 a
89.2 a
8.0 a
11.4 a
68.6 a
22.5 a
64.0 a
中盐 MS
0/0
16.8
145.8
90.4
8.7
12.0
74.1
25.0
71.7
3/0
15.8
122.6
89.4
7.8
10.0
59.4
19.0
63.2
4/0
15.7
121.2
89.0
7.7
10.0
61.3
21.0
59.9
5/0
16.2
128.9
89.6
8.0
12.0
71.5
22.0
57.4
6/0
15.8
122.4
88.9
7.7
13.0
66.7
21.0
55.7
7/0
15.6
104.8
88.4
6.7
11.0
65.6
15.0
39.2
1/4
15.8
114.5
87.6
7.2
10.0
56.6
22.0
57.9
2/4
14.1
93.3
87.5
6.6
9.0
53.4
16.0
39.9
1/5
15.6
106.7
86.6
6.8
12.0
68.7
14.0
38.0
1/6
14.1
98.5
85.2
7.0
10.0
58.6
14.0
39.9
平均值 Mean
15.6 ab
115.9 b
88.3 ab
7.4 ab
10.9 ab
63.6 b
18.9 b
52.3 b
高盐 HS
0/0
15.7
121.6
84.5
7.7
10.0
61.2
21.0
60.4
4/0
14.6
93.5
82.5
6.4
9.0
53.1
16.0
40.4
5/0
15.1
111.0
82.7
7.4
11.0
63.4
18.0
47.6
6/0
15.4
109.5
83.8
7.1
11.0
67.9
14.0
41.6
7/0
11.7
62.4
81.6
5.3
10.0
48.9
4.0
13.5
1/4
12.7
67.7
80.7
5.3
10.0
55.6
5.0
12.1
1/5
12.5
70.7
82.3
5.7
9.0
48.9
9.0
21.8
平均值 Mean
14.0 b
90.9 c
82.6 b
6.4 b
10.0 b
57.0 c
12.4 c
33.9 c
CK: control; MS: medium-salinity stress; HS: high-salinity stress. PL: panicle length; TG: total grains; PFG: percentage of filled grains; GD: grain density; NB: number of branches. Values followed by different lowercase are significantly different at the 5% probability level. CK: 对照; MS: 中盐; HS: 高盐。标以不同小写字母的值在5%水平差异显著。
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