Effect of different harvest periods on the quality of F1 hybrid rice seeds

doi:10.16178/j.issn.0528-9017.20231235

Abstract

Abstract:

In order to investigate the effect of different harvest periods on seed quality of hybrid rice F₁ generation, this study selected three hybrid rice seed production combinations, namely Jing 4155S/R534, Quan 9311A/Wushansimiao, and Longzhen 36S/Yuzhan, as experimental materials. After spraying gibberellin, 8 different harvest periods were set to study the effect of different harvest times on the seed quality of hybrid rice F₁ generation. By examining relevant agronomic traits, the results showed that Jing 4155S/R534 has good comprehensive seed quality and is suitable for harvesting around 33 days after spraying gibberellin; Quan 9311A/Wushansimiao seedlings have good comprehensive seed quality and are suitable for harvesting around 30 days after spraying gibberellin; Longzhen 36S/Yuzhan is suitable for harvesting around 35 days after spraying Jiuerling. Therefore, selecting an appropriate harvesting period can significantly improve the germination rate and vigor of hybrid rice seeds, increase thousand grain weight, reduce the degree of seed powdering and glume cracking, improve the quality of hybrid rice seeds, and ensure stable yield of hybrid rice.

Key words: hybrid rice, gibberellin, harvest period, seed quality

CLC Number:

S511

GU Shuwen, XU Hongcheng, LI Zhe, CHEN Jinzhu, WU Haifeng, YANG Shicai, PAN Zhudong, ZHU Kongzhi. Effect of different harvest periods on the quality of F₁ hybrid rice seeds[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(4): 808-811.

Figures/Tables 4

References 8

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组合名称	亲本	播种日期 (月-日)	时差/ d	移栽日期 (月-日)	抽穗日期 (月-日)	播始历期/ d
晶4155S/R534	R534	04-27	15	06-10	08-11	106
	晶4155S	05-12		06-10	08-11	91
荃9311A/五山丝苗	五山丝苗	04-27	22	06-05	08-11	106
	荃9311A	05-19		06-15	08-10	82
隆臻36S/钰占	钰占	05-11	-6	06-14	08-28	109
	隆臻36S	05-05		06-16	08-29	116

组合名称	亲本	播种日期 (月-日)	时差/ d	移栽日期 (月-日)	抽穗日期 (月-日)	播始历期/ d
晶4155S/R534	R534	04-27	15	06-10	08-11	106
	晶4155S	05-12		06-10	08-11	91
荃9311A/五山丝苗	五山丝苗	04-27	22	06-05	08-11	106
	荃9311A	05-19		06-15	08-10	82
隆臻36S/钰占	钰占	05-11	-6	06-14	08-28	109
	隆臻36S	05-05		06-16	08-29	116

喷施赤霉酸后天数/d	发芽势/ %	发芽率/ %	千粒重/ g	粉质化/ %	裂颖率/ %	粒长/ mm	粒宽/ mm	收获时天气	气温/ ℃
25	74.7 d	75.3 d	17.6 d	1.2 d	1.2 bc	8.0 ab	2.4 abc	阴有阵雨	25.6
27	86.0 c	87.3 c	17.7 cd	0.7 e	1.0 c	8.3 a	2.3 c	多云	26.5
29	90.7 bc	91.7 bc	18.2 c	1.2 d	3.0 a	8.1 ab	2.5 abc	晴到多云	25.5
31	92.7 ab	91.7 bc	19.4 ab	0.4 f	1.6 abc	8.1 ab	2.5 ab	晴到多云	25.5
33	96.3 ab	96.7 a	19.6 a	2.4 c	2.6 ab	8.1 b	2.3 c	阴有阵雨	25.1
35	96.7 ab	94.7 ab	18.9 b	5.3 a	2.6 ab	7.7 c	2.5 a	阴有阵雨	24.1
37	97.7 a	96.3 ab	18.9 b	5.5 a	2.0 abc	7.9 bc	2.4 abc	多云	24.4
39	94.0 ab	92.7 ab	19.8 a	4.1 b	3.0 a	8.0 b	2.4 bc	多云	26.2

喷施赤霉酸后天数/d	发芽势/ %	发芽率/ %	千粒重/ g	粉质化/ %	裂颖率/ %	粒长/ mm	粒宽/ mm	收获时天气	气温/ ℃
25	74.7 d	75.3 d	17.6 d	1.2 d	1.2 bc	8.0 ab	2.4 abc	阴有阵雨	25.6
27	86.0 c	87.3 c	17.7 cd	0.7 e	1.0 c	8.3 a	2.3 c	多云	26.5
29	90.7 bc	91.7 bc	18.2 c	1.2 d	3.0 a	8.1 ab	2.5 abc	晴到多云	25.5
31	92.7 ab	91.7 bc	19.4 ab	0.4 f	1.6 abc	8.1 ab	2.5 ab	晴到多云	25.5
33	96.3 ab	96.7 a	19.6 a	2.4 c	2.6 ab	8.1 b	2.3 c	阴有阵雨	25.1
35	96.7 ab	94.7 ab	18.9 b	5.3 a	2.6 ab	7.7 c	2.5 a	阴有阵雨	24.1
37	97.7 a	96.3 ab	18.9 b	5.5 a	2.0 abc	7.9 bc	2.4 abc	多云	24.4
39	94.0 ab	92.7 ab	19.8 a	4.1 b	3.0 a	8.0 b	2.4 bc	多云	26.2

喷施赤霉酸后天数/d	发芽势/ %	发芽率/ %	千粒重/ g	粉质化/ %	裂颖率/ %	粒长/ mm	粒宽/ mm	收获时天气	气温/ ℃
25	66.7 d	69.7 c	26.6 b	1.9 de	6.0 ab	9.2 b	2.7 abc	阴有阵雨	25.6
27	87.3 bc	87.0 b	26.7 b	2.3 de	7.6 a	9.3 ab	2.7 c	多云	26.5
29	94.3 ab	96.3 a	26.5 b	2.8 d	4.4 ab	9.3 ab	2.8 ab	晴到多云	25.5
31	93.0 ab	98.7 a	26.4 b	3.2 d	4.4 ab	9.5 a	2.8 abc	晴到多云	25.5
33	96.7 a	98.7 a	27.9 a	1.3 e	6.8 ab	9.3 ab	2.7 bc	阴有阵雨	25.1
35	93.7 ab	96.0 a	26.4 b	8.8 c	5.8 ab	9.4 ab	2.7 abc	阴有阵雨	24.1
37	81.7 c	86.3 b	26.9 b	13.2 b	7.0 ab	9.1 b	2.6 d	多云	24.4
39	86.0 bc	90.0 b	27.1 b	26.2 a	4.2 b	9.5 a	2.8 a	多云	26.2

Effect of different harvest periods on the quality of F₁ hybrid rice seeds

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喷施赤霉酸后天数/d	发芽势/ %	发芽率/ %	千粒重/ g	粉质化/ %	裂颖率/ %	粒长/ mm	粒宽/ mm	收获时天气	气温/ ℃
25	61.7 c	61.7 d	22.1 d	0.5 bc	10.6 ab	8.9 c	2.6 b	多云	22.1
27	87.0 ab	84.7 bc	21.9 d	0.6 bc	10.8 ab	9.2 abc	2.7 b	阴有阵雨	21.3
29	86.3 b	82.3 c	24.4 b	0.6 bc	12.2 a	9.3 ab	2.8 a	多云到阴	23.7
31	88.3 ab	88.3 abc	23.2 c	0.2 c	12.0 ab	9.4 ab	2.6 b	多云	23.9
33	90.3 ab	88.3 abc	23.2 c	0.7 bc	8.4 ab	9.5 a	2.6 b	阴有小雨	21.6
35	95.0 a	93.7 a	23.2 c	0.4 bc	8.0 ab	9.1 bc	2.6 b	多云	20.5
37	90.7 ab	91.3 ab	24.4 b	1.6 a	6.2 b	9.4 ab	2.6 b	多云	21.6
39	92.3 ab	92.3 a	25.3 a	0.8 b	8.6 ab	9.3 ab	2.6 b	阴有小雨	19.2

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