Study on Plant Type of Conventional Rice Varieties with High Light Efficiency in Yunnan Province

doi:10.11923/j.issn.2095-4050.cjas2024-0059

Abstract

Abstract:

This study aimed to explore an ideal plant type model for high light efficiency rice cultivation in Yunnan Province, thereby promoting rice yields. The experiment utilized low light efficiency rice varieties, namely 'Chujing 27' (HP1), 'Taiwan Upland Rice' (HP2), 'AZUCENA' (HP3), and 'B3619C-7B-8-1-4' (HP4), as well as high light efficiency rice varieties, specifically 'Denong 205' (HP5), 'Dianjingyou 1' (HP6), 'Diantun' 502 (HP7), 'Yunda 107' (HP8), and 'Dianrui 449' (HP9), as experimental materials to investigate rice variety plant type patterns. A single-factor randomized block design was employed, with 9 rice varieties constituting the treatments and 4 replicates per treatment. Rice planting, water, and fertilizer management were conducted according to conventional rice cultivation methods, and relevant agronomic traits for high light efficiency were measured at maturity. The results indicated that the ideal plant type pattern of high light efficiency varieties in Yunnan Province exhibited the following characteristics: a plant height ranging from 90 to 110 cm; a panicle length of 22.0 to 25.3 cm; the number of secondary branches of 25.1 to 31.1; a flag leaf base angle of 10.5 to 17.1°, a flag leaf opening angle of 11.7 to 17.4°, a flag leaf length of 18.7 to 31.1 cm, and a flag leaf width of 1.4 to 1.8 cm. This experiment has elucidated the ideal plant type pattern for high light efficiency rice in Yunnan, thus providing a theoretical foundation for breeding such rice varieties.

Key words: Yunnan Province, high light efficiency, rice, variety, ideal plant type model, agronomic trait

LI Jianli, WANG Silai, ZOU Shu, ZHANG Haiqing, XIANG Zhangnen, PU Wei, ZHANG Yujiao, HUANG Guangfu. Study on Plant Type of Conventional Rice Varieties with High Light Efficiency in Yunnan Province[J]. Journal of Agriculture, 2025, 15(6): 10-15.

Figures/Tables 6

References 26

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品种	结实率/%		有效穗数/（穗/m²）	每穗粒数/粒	千粒重/g	产量/(kg/hm²)
HP1	62.0cde		406.3bc	107.8bcd	29.4a	9100.0b
HP2	50.8e		424.7bc	94.8cd	29.1a	6800.0c
HP3	62.7cde		596.9A	75.3d	28.2ab	8900.0b
HP4		54.1de	394.9bc	139.9ab	24.8b	8500.0b
HP6		68.9bcd	325.9c	149.3a	24.4b	9500.0b
平均		68.9	435.6	114.8	26.6	8600.0
HP5	76.0abc		340.0bc	130.5abc	29.3a	11400.0a
HP7	81.0ab		324.9c	139.3ab	27.4ab	11500.0a
HP8	90.0a		321.4c	114.9abcd	30.5a	11800.0a
HP9	73.5abc		472.9ab	97.3cd	28.6a	11100.0a
平均	80.1		364.8	120.5	29	11500.0

品种	结实率/%		有效穗数/（穗/m²）	每穗粒数/粒	千粒重/g	产量/(kg/hm²)
HP1	62.0cde		406.3bc	107.8bcd	29.4a	9100.0b
HP2	50.8e		424.7bc	94.8cd	29.1a	6800.0c
HP3	62.7cde		596.9A	75.3d	28.2ab	8900.0b
HP4		54.1de	394.9bc	139.9ab	24.8b	8500.0b
HP6		68.9bcd	325.9c	149.3a	24.4b	9500.0b
平均		68.9	435.6	114.8	26.6	8600.0
HP5	76.0abc		340.0bc	130.5abc	29.3a	11400.0a
HP7	81.0ab		324.9c	139.3ab	27.4ab	11500.0a
HP8	90.0a		321.4c	114.9abcd	30.5a	11800.0a
HP9	73.5abc		472.9ab	97.3cd	28.6a	11100.0a
平均	80.1		364.8	120.5	29	11500.0

变量	剑叶				倒二叶
变量	叶基角(X₁)	开张角(X₂)	叶长(X₃)	叶宽(X₄)	叶基角(X₅)	开张角(X₆)	叶长(X₇)	叶宽(X₈)	产量(Y)
X₁	1
X₂	0.986^**	1
X₃	-0.131	-0.098	1
X₄	-0.367	-0.290	0.690^**	1
X₅	0.197	0.193	-0.387	-0.161	1
X₆	-0.034	-0.026	0.026	0.303	0.552^*	1
X₇	0.225	0.214	0.311	0.043	-0.447	-0.736^**	1
X₈	-0.083	-0.070	-0.156	0.050	0.547^*	0.632^**	-0.898^**	1
Y	-0.670^**	0.624^**	0.198	0.325	-0.382	0.064	-0.187	0.013	1

变量	剑叶				倒二叶
变量	叶基角(X₁)	开张角(X₂)	叶长(X₃)	叶宽(X₄)	叶基角(X₅)	开张角(X₆)	叶长(X₇)	叶宽(X₈)	产量(Y)
X₁	1
X₂	0.986^**	1
X₃	-0.131	-0.098	1
X₄	-0.367	-0.290	0.690^**	1
X₅	0.197	0.193	-0.387	-0.161	1
X₆	-0.034	-0.026	0.026	0.303	0.552^*	1
X₇	0.225	0.214	0.311	0.043	-0.447	-0.736^**	1
X₈	-0.083	-0.070	-0.156	0.050	0.547^*	0.632^**	-0.898^**	1
Y	-0.670^**	0.624^**	0.198	0.325	-0.382	0.064	-0.187	0.013	1

变量	穗抽出度(X₁)	穗长(X₂)	一次枝梗数(X₃)	二次枝梗数(X₄)	产量(Y)
X₁	1
X₂	0.089	1
X₃	0.587^*	0.227	1
X₄	0.280	0.707^*	0.325	1
Y	0.257	0.657^**	-0.172	0.714**	1