The Performance of New Temperature-sensitive Indica Hybrid Rice Combinations in Late Season Regional Trials in Southern Guangxi

doi:10.11923/j.issn.2095-4050.cjas20190700125

Abstract

Abstract:

To recommend hybrid rice varieties with better comprehensive traits and full utilization of light and temperature resources in southern Guangxi, 9 new Indica hybrid rice combinations (including controls) with temperature sensitivity were used in complete random block plot test, and the characteristics of these combinations in the late season in the ecological area of southern Guangxi were evaluated by variance analysis and sequencing comparison. The results showed that the yield, whole growth period and resistance of ‘Shenliangyou 9353’, ‘Changliangyou huazhan’, ‘Changliangyou 9’, ‘Qianliangyou 9’, ‘Kunliangyou huazhan’ and ‘Qianliangyou 6’ were suitable for the ecological area of southern Guangxi. The yield of ‘Shenliangyou 9353’ was the highest, which was significantly higher than that of the control. Although ‘Fyou 6735’ and ‘Wantai xiangzhan’ had good resistance, their yields were very significant or significantly lower than those of other combinations (including the control). The yield of the tested combinations correlated well with the whole growth period, the total grain number and real grain number, but not with other traits. Six temperature-sensitive seedling combinations can make full use of light and temperature resources in southern Guangxi ecological region, which are suitable for developing winter production and adjusting industrial structure, and can be used as alternative combinations in early and late rice production.

Key words: Temperature-sensitive Indica Hybrid Rice, Characteristics, Sequencing Comparison, Ecological Area of Southern Guangxi, Late Season

CLC Number:

S338

Zhu Zhijun, Li Xinglin, Meng Yunshao, Huang Xiaojiang, Liu Zhaoyang, Xin Yingfeng, Mo Qiuxia, Jiang Xianhua, Yang Shoushan, Chen Xinquan, Lu Zhangquan. The Performance of New Temperature-sensitive Indica Hybrid Rice Combinations in Late Season Regional Trials in Southern Guangxi[J]. Journal of Agriculture, 2020, 10(7): 1-6.

Figures/Tables 3

References 26

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品种（组合）	播种期（月/日）	移栽期（月/日）	秧龄/ d	始穗期（月/日）	齐穗期（月/日）	成熟期（月/日）	全生育期/ d	比CK±/ d
F优6735	7/21	8/3	13	9/28	10/1	11/3	106	-5
深两优9353	7/21	8/3	13	9/29	10/2	11/13	116	+5
乾两优6号	7/21	8/3	13	9/28	10/1	11/10	113	+2
乾两优9号	7/21	8/3	13	9/30	10/3	11/9	112	+1
昌两优华占	7/21	8/3	13	10/1	10/5	11/12	115	+4
昌两优9号	7/21	8/3	13	10/3	10/6	11/13	116	+5
坤两优华占	7/21	8/3	13	9/28	10/1	11/8	111	0
万泰香占	7/21	8/3	13	9/28	10/1	11/4	107	-4
丰田优553	7/21	8/3	13	9/30	10/3	11/8	111	—

品种（组合）	播种期（月/日）	移栽期（月/日）	秧龄/ d	始穗期（月/日）	齐穗期（月/日）	成熟期（月/日）	全生育期/ d	比CK±/ d
F优6735	7/21	8/3	13	9/28	10/1	11/3	106	-5
深两优9353	7/21	8/3	13	9/29	10/2	11/13	116	+5
乾两优6号	7/21	8/3	13	9/28	10/1	11/10	113	+2
乾两优9号	7/21	8/3	13	9/30	10/3	11/9	112	+1
昌两优华占	7/21	8/3	13	10/1	10/5	11/12	115	+4
昌两优9号	7/21	8/3	13	10/3	10/6	11/13	116	+5
坤两优华占	7/21	8/3	13	9/28	10/1	11/8	111	0
万泰香占	7/21	8/3	13	9/28	10/1	11/4	107	-4
丰田优553	7/21	8/3	13	9/30	10/3	11/8	111	—

品种（组合）	基本苗/（万/hm²）	最高苗数/（万/hm²）	分蘖率/%	有效穗/（万/hm²）	成穗率/%	株高/cm	穗长/cm	总粒数/（粒/穗）	实粒数/（粒/穗）	结实率/%	千粒重/g
F优6735	52.5	382.5	628.6	246	64.3	95.0	22.0	128	98	76.6	25.1
深两优9353	52.5	564	974.3	319.5	56.6	117.7	23.4	162	133	82.1	23.1
乾两优6号	52.5	477	808.6	262.5	55.0	121.3	21.5	154	132	85.7	21.2
乾两优9号	52.5	348	562.9	307.5	88.4	113.0	24.4	132	114	86.4	22.6
昌两优华占	52.5	405	671.4	255	63.0	115.3	25.8	160	132	82.5	23.9
昌两优9号	52.5	553.5	954.3	280.5	50.7	117.0	23.2	150	124	82.7	22.9
坤两优华占	52.5	456	768.6	307.5	67.4	111.7	22.4	135	105	77.8	23.3
万泰香占	52.5	532.5	914.3	280.5	52.7	123.7	26.2	122	103	84.4	19.8
丰田优553	52.5	331.5	531.4	292.5	88.2	101.7	23.9	141	120	85.1	22.4

品种（组合）	基本苗/（万/hm²）	最高苗数/（万/hm²）	分蘖率/%	有效穗/（万/hm²）	成穗率/%	株高/cm	穗长/cm	总粒数/（粒/穗）	实粒数/（粒/穗）	结实率/%	千粒重/g
F优6735	52.5	382.5	628.6	246	64.3	95.0	22.0	128	98	76.6	25.1
深两优9353	52.5	564	974.3	319.5	56.6	117.7	23.4	162	133	82.1	23.1
乾两优6号	52.5	477	808.6	262.5	55.0	121.3	21.5	154	132	85.7	21.2
乾两优9号	52.5	348	562.9	307.5	88.4	113.0	24.4	132	114	86.4	22.6
昌两优华占	52.5	405	671.4	255	63.0	115.3	25.8	160	132	82.5	23.9
昌两优9号	52.5	553.5	954.3	280.5	50.7	117.0	23.2	150	124	82.7	22.9
坤两优华占	52.5	456	768.6	307.5	67.4	111.7	22.4	135	105	77.8	23.3
万泰香占	52.5	532.5	914.3	280.5	52.7	123.7	26.2	122	103	84.4	19.8
丰田优553	52.5	331.5	531.4	292.5	88.2	101.7	23.9	141	120	85.1	22.4

品种（组合）	小区产量/kg				产量(kg/hm²)	日产量/[kg/(hm²·d)]	产量比CK±/%
品种（组合）	Ⅰ	Ⅱ	Ⅲ	平均	产量(kg/hm²)	日产量/[kg/(hm²·d)]	产量比CK±/%
F优6735	7.95	6.67	6.83	7.15	5376 BCc	50.7	-24.2
深两优9353	14.60	10.07	9.78	11.48	8633 Aa	74.4	21.7
乾两优6号	9.27	9.14	8.62	9.01	6776 ABCb	60.0	-4.4
乾两优9号	10.56	9.22	9.45	9.74	7323 Aab	65.4	3.3
昌两优华占	11.04	9.13	9.70	9.96	7490 Aab	65.1	5.6
昌两优9号	11.06	9.45	8.87	9.79	7362 Aab	63.5	3.8
坤两优华占	9.18	8.88	9.67	9.24	6948 ABb	62.6	-2.0
万泰香占	6.24	7.12	6.97	6.78	5099 Cc	47.7	-28.1
丰田优553	9.99	8.56	9.76	9.43	7091 ABb	63.9	—