强再生力水稻品种碳氮营养与激素生理特征研究

doi:10.3724/SP.J.1006.2021.02070

Abstract

Abstract:

It is of great significance to clarify the physiological basis and hormone regulation characteristics of axillary bud germination for the selection of ratoon rice cultivars with strong ratooning ability and the regulation of cultivation techniques. In this study, the content of non-structural carbohydrate (NSC) and total nitrogen in different parts of 13 cultivars selected in 2019 were analyzed at the first harvest stage using the screening platform established in Chongyi County, Jiangxi Province. The biosynthesis and signal transduction genes of brassinolides and strigolactones, which promoted and inhibited axillary bud germination, were also studied. The results showed that there were significant differences in the regeneration rate of 13 cultivars, ranging from 1.26 to 2.38. The contents of soluble sugar, starch and non-structural carbohydrate in leaves, leaf sheaths, and stems were significantly different among different cultivars at different node positions (P-values were all less than 0.001). The total nitrogen content was also significant difference among them except for the upper and lower node stems. The correlation analysis showed that the contents of the soluble sugar, starch and NSC of the stem at the lower node had significant or extremely significant correlation with the regeneration rates (R² = 0.4442^*, 0.9000^**, and 0.8303^**, respectively), while there was no significant correlation in others. The relative expression levels of tillering promoting genes (CYP90A, CYP85A2, D2, BRI, BSK, and CYCD3) in BR synthesis and signal pathway were higher, while the inhibited tillering genes (CYP734A1, BZR, and BKI) were lower in Guyou 676 with higher regeneration rates. In conclusion, the starch content in the stem at the lower node could be used as the screening index of strong regeneration ability cultivar, and also the relative expression levels of BR pathway related genes could be used as supplementary indexes.

Key words: ratoon rice, regeneration rate, starch content, brassinosteroid, gene expression

HUANG Su-Hua, LIN Xi-Yue, LEI Zheng-Ping, DING Zai-Song, ZHAO Ming. Physiological characters of carbon, nitrogen, and hormones in ratooning rice cultivars with strong regeneration ability[J].Acta Agronomica Sinica, 2021, 47(11): 2278-2289.

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品种类型 Cultivar type	品种名称 Cultivar name	品种来源 Variety source
籼型三系杂交稻 Three-line indica hybrid rice	谷优676 Guyou 676 (GY676)	谷丰A×福恢676 Gufeng A×Fuhui 676
	赣优7076 Ganyou 7076 (GY7076)	赣香A×福恢7076 Ganxiang A×Fuhui 7076
	泸优明占 Luyoumingzhan (LYMZ)	泸香078A×华占 Luxiang 078A×Huazhan
籼型两系杂交稻 Two-line indica hybrid rice	晶两优534 Jingliangyou 534 (JLY534)	晶4155S×R534 Jing 4155S×R534
	晶两优华占 Jingliangyouhuazhan (JLYHZ)	晶4155S×华占 Jing 4155S×Huazhan
	智两优5336 Zhiliangyou 5336 (ZLY5336)	智农S×闽恢5336 Zhinong S×Minhui 5336
	晶两优粤农丝苗 Jingliangyouyuenongsimiao (JLYSM)	4155S×R1212
	隆两优华占 Longliangyouhuazhan (LLYHZ)	隆科638S×华占 Longke 638S×Huazhan
	隆两优3463 Longliangyou 3463 (LLY3463)	隆科638S×R3463 Longke 638S×R3463
	晶两优1377 Jingliangyou 1377 (JLY1377)	晶4155S×R1377 Jing 4155S×R1377
	徽两优丝苗 Huiliangyousimiao (HLYSM)	1892S×五山丝苗 1892S×Wushansimiao
	深两优7011 Shenliangyou 7011 (SLY7011)	深08S×福恢7011 Shen 08S×Fuhui 7011
籼粳三系杂交稻 Three-line indica-japonica hybrid rice	甬优4949 Yongyou 4949 (YY4949)	甬粳49A×F9249 Yongjing 49A×F9249

基因功能 Gene function	基因 Gene	基因座位 Locus	上游引物 Forward primer (5′-3′)	下游引物 Reverse primer (5′-3′)
内参References	GAPDH	Os02g0601300	CATGTTCAAGTATGACACCGTC	CACCAGTAGACTCAACAACGTA
BR合成 BR synthesis	CYP90B	Os03g0227700	GAAGATCCTGCCGGTGTTAG	TACTCTTCCATCTCCAGGGATT
	CYP90A	Os12g0139300	AGCCTCATCAATCTCACTCATT	GTCTTGTACGCCGAGATGAG
	D2	Os01g0197100	CCAACTGGAAGAGGAGAACATA	ACATGTAGTCTGTCCATTGCAA
	CYP85A2	Os03g0602300	TGGAGAAGAACATGGAATCACA	GGAATGTTGCAATTTCTACGGT
	CYP734A1-1	Os06g0600400	GCTAGCTAGGAAAAGACAGGAA	GTACCACTAGTCTGTTAGCGAG
	CYP 734A1-2	Os01g0388000	ACCACCACTGGAAGAAAATCTA	CGTCTTGTTCTTGGTTGTTGTT
BR信号转导 BR signal transduction	BRI	Os01g0718300	GATGGCAATGTTCAAGGAGATC	GAATGACTGTTGTTTCTACGGG
	BSK	Os10g0571300	CTTTTGAGTGGGAAGCACATAC	TTAGCATACTGCCCTTCTAAGG
	BKI	Os08g0474500	GTCGTCCTTGTCCAATAATCG	CCGGAGATGATGAACGAGTG
	BZR	Os07g0580500	ATTTGGGCGATTTCATTCTAGC	CGTGAATAAAATCAGCCGTGAT
	CYCD3	Os09g0111100	AGGGTTCAGTCCAAGAAAAAGA	GACAAAACAGCTTCTTCCTCAC
SLs合成 SLs synthesis	D10	Os04g0550600	TGCAAAGAAGATAGGGACAGAG	GGAATCCCATTGGAAAAGTGAG
	D17	Os01g0746400	CTGTACAAGTTCGAGTGGCA	GTTGATGAAGTGGAACGTCAC
	D27	Os11g0587000	AGAAGCTTCTGGGCTAAAGAAT	ACCTTGATCATTGTGAGGATGT
SLs信号转导 SLs signal transduction	D3	Os06g0154200	ATCTTTCACTATGGGAGCGATT	CATGGATGAAAAGCTTCCTGAG
	D14	Os03g0203200	AGAAAGAGAGAGAAGAAGCGAG	CGCGCTCCCCTTTTATATACTA
	D53	Os11g0104300	CTTCCTCTCCAAATTCCCCTT	AGAGAAGAGAAAAGGCTTGACC
	SPL14	Os08g0509600	GATGGATTGGTCTCTGTAGAGG	TTGAACACAAAATAAGGGCAGG
	TB1	Os03g0706500	CAATCTTGTGAGCACCGAATTG	GTGTGTGGATGGATGATCACAT

品种 Cultivar	头季生育期 Main crop duration (d)	再生季生育期 Ratoon crop duration (d)	总生育期 Whole crop duration (d)	头季产量 Main yield (t hm^-2)	再生季产量 Ratoon yield (t hm^-2)	年产量 Annual yield (t hm^-2)	再生力 Regeneration rate
谷优676 GY676	136	71	207	9.42 b	5.25 c	14.37 cd	2.38 a
晶两优534 JLY534	145	72	217	9.48 b	6.17 b	15.65 a	1.99 b
晶两优华占 JLYHZ	140	72	212	8.98 c	5.03 c	14.01 cd	1.97 b
智两优5336 ZLY5336	145	72	217	7.65 e	4.45 d	12.10 f	1.94 b
晶两优粤农丝苗 JLYSM	145	72	217	8.80 c	4.58 d	13.38 e	1.86 b
隆两优华占 LLYHZ	142	72	214	10.13 a	4.53 d	14.66 b	1.85 b
隆两优3463 LLY3463	145	72	217	9.90 a	4.68 d	14.60 b	1.71 c
晶两优1377 JLY1377	147	74	221	9.83 a	5.10 c	14.93 b	1.68 c
深两优7011 SLY7011	147	74	221	8.40 d	4.58 d	12.98 e	1.60 c
甬优4949 YY4949	134	77	210	9.08 c	6.57 a	15.65 a	1.57 d
徽两优丝苗 HLYSM	145	72	217	8.18 d	4.05 e	12.23 f	1.55 d
赣优7076 GY7076	136	71	207	8.94 c	4.73 d	13.67 c	1.43 d
泸优明占 LYMZ	135	71	206	9.20 bc	4.65 d	13.85 c	1.26 e

器官 Organ	差异源 Source of variation	自由度 df	可溶性糖SS		淀粉Starch		非结构性碳水化合物NSC
器官 Organ	差异源 Source of variation	自由度 df	F	P	F	P	F	P
叶片Leaf	节位 Node site	1	2113.78	8.66E-44	1727.37	1.44E-41	594.95	3.92E-30
叶片Leaf	品种 Cultivar	12	854.64	3.12E-55	387.53	2.20E-46	497.91	3.51E-49
叶鞘Sheath	节位 Node site	1	12,932.43	5.13E-64	832.86	1.13E-33	2473.73	1.59E-45
叶鞘Sheath	品种 Cultivar	12	1391.03	1.05E-60	173.85	1.63E-37	308.29	7.72E-44
茎秆Stem	节位 Node site	1	3384.81	5.26E-49	1396.50	3.03E-39	3923.92	1.19E-50
茎秆Stem	品种 Cultivar	12	2564.40	1.35E-67	1476.25	2.24E-61	3189.50	4.71E-70

器官 Organ	部位 Site	可溶性糖 SS			淀粉 Starch			非结构性碳水化合物 NSC
器官 Organ	部位 Site	R²	F	P	R²	F	P	R²	F	P
叶片Leaf	上部 Upper	0.0684	0.8077	0.3881	0.1077	1.3276	0.2737	0.1593	2.0851	0.1766
叶片Leaf	下部 Lower	0.0150	0.1678	0.6900	0.1692	2.2408	0.1625	0.1029	1.2623	0.2851
叶鞘Sheath	上部 Upper	0.0002	0.0026	0.9603	0.1917	2.6093	0.1345	0.0706	0.8362	0.3801
叶鞘Sheath	下部 Lower	0.2005	2.7586	0.1249	0.0784	0.9356	0.3542	0.1709	2.2681	0.1602
茎秆Stem	上部 Upper	0.3241	5.2743	0.0423	0.2771	4.2160	0.0646	0.3317	5.4589	0.0394
茎秆Stem	下部 Lower	0.4442^*	8.7913	0.0129	0.9000^**	98.9956	0.0000	0.8303^**	53.8256	0.0000

Physiological characters of carbon, nitrogen, and hormones in ratooning rice cultivars with strong regeneration ability

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