Analysis of the vigorous vitality of wild rice variety Changmaogu and its response to propiconazole

doi:10.16178/j.issn.0528-9017.20220973

Abstract

Abstract:

To explore the effects of propiconazole on rice seedlings, a pot experiment was conducted using wild rice variety Changmaogu and conventional rice variety 9311. This study investigated the impact of foliar spraying with 20 mg·L^-1 propiconazole on the growth phenotypes and physiological metabolism of these two rice varieties. The results showed that propiconazole reduced the plant height growth rate of both rice varieties, while maintained a relatively stable leaf area growth rate in Changmaogu. Propiconazole also increased root length and average root diameter, significantly increased the biomass of the seedlings, and elevated the contents of chlorophyll a, chlorophyll b, and total chlorophyll. Moreover, propiconazole significantly enhanced the net photosynthetic rate, transpiration rate, stomatal conductance, actual photochemical efficiency of PSⅡ, and electron transfer rate in both varieties. It also increased the activities of superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX), and catalase (CAT) in the leaves. In summary, foliar spraying with 20 mg·L^-1 propiconazole can effectively promote the growth of rice seedlings and improve their physiological characteristics.

Key words: propiconazole, rice, seedling, phenotype, physiological property

CLC Number:

S311

HAN Chunning, ZHENG Dianfeng, FENG Naijie, CHEN Guanjie, ZHANG Shuyu, ZHOU Xing. Analysis of the vigorous vitality of wild rice variety Changmaogu and its response to propiconazole[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(1): 22-30.

Figures/Tables 7

References 27

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处理后天数/ d	根长/cm				根表面积/cm²				根体积/cm³				根平均直径/mm
处理后天数/ d	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯
3	118.5	131.9^*	97.7	115.4^*	88.4	89.8^*	83.9	87.2^**	23.4	23.5	22.7	23.0	0.4	0.4	0.4	0.4^**
6	117.0	132.5^*	134.6	147.8^*	87.0	87.1	86.8	92.1^*	23.9	23.5	23.2	23.6	0.4	0.4	0.3	0.4^**
9	173.8	152.9^*	170.8	196.8^*	108.9	132.4	88.8	106.8^*	24.9	25.7	23.2	24.7	0.4	0.7^*	0.3	0.4
12	209.4	224.6^*	264.7	283.0	92.5	95.6	109.8	118.8	24.3	23.9	24.6	25.9	0.4	0.3^*	0.4	0.5
15	190.5	190.4	259.6	239.3	83.0	86.3	92.2	89.8	23.4	23.8	24.3	24.1	0.3	0.4	0.6	0.7

处理后天数/ d	根长/cm				根表面积/cm²				根体积/cm³				根平均直径/mm
处理后天数/ d	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯	长毛谷- CK	长毛谷- 烯	9311- CK	9311- 烯
3	118.5	131.9^*	97.7	115.4^*	88.4	89.8^*	83.9	87.2^**	23.4	23.5	22.7	23.0	0.4	0.4	0.4	0.4^**
6	117.0	132.5^*	134.6	147.8^*	87.0	87.1	86.8	92.1^*	23.9	23.5	23.2	23.6	0.4	0.4	0.3	0.4^**
9	173.8	152.9^*	170.8	196.8^*	108.9	132.4	88.8	106.8^*	24.9	25.7	23.2	24.7	0.4	0.7^*	0.3	0.4
12	209.4	224.6^*	264.7	283.0	92.5	95.6	109.8	118.8	24.3	23.9	24.6	25.9	0.4	0.3^*	0.4	0.5
15	190.5	190.4	259.6	239.3	83.0	86.3	92.2	89.8	23.4	23.8	24.3	24.1	0.3	0.4	0.6	0.7

荧光参数	处理	喷药后天数/d
荧光参数	处理	3	6	9	12	15
PSⅡ实际光化学效率	长毛谷-CK	0.12	0.12	0.07	0.06	0.08
	长毛谷-烯	0.15	0.15	0.07	0.07	0.17^*
	9311-CK	0.11	0.10	0.11	0.05	0.08
	9311-烯	0.11	0.11	0.13	0.08^*	0.09
电子传递速率	长毛谷-CK	79.50	75.25	47.32	40.58	50.94
	长毛谷-烯	80.18	72.41	49.12	44.09	106.79^*
	9311-CK	64.34	63.38	55.97	28.49	57.15
	9311-烯	66.91	66.08	81.66^*	49.00^*	57.21
光化学猝灭系数	长毛谷-CK	1.54	1.58	0.30	0.43	0.48
	长毛谷-烯	1.63	1.65	0.27	0.39	0.67
	9311-CK	0.78	0.74	0.53	0.18	0.34
	9311-烯	0.86	0.85	0.74^*	0.52^*	0.46^*
非光化学猝灭系数	长毛谷-CK	1.00	1.00	0.92	0.97	0.96
	长毛谷-烯	1.00	1.00	0.89	0.95	0.92
	9311-CK	0.99	1.00	0.96	0.91	0.92
	9311-烯	0.99	1.00	0.96	0.96^**	0.95

荧光参数	处理	喷药后天数/d
荧光参数	处理	3	6	9	12	15
PSⅡ实际光化学效率	长毛谷-CK	0.12	0.12	0.07	0.06	0.08
	长毛谷-烯	0.15	0.15	0.07	0.07	0.17^*
	9311-CK	0.11	0.10	0.11	0.05	0.08
	9311-烯	0.11	0.11	0.13	0.08^*	0.09
电子传递速率	长毛谷-CK	79.50	75.25	47.32	40.58	50.94
	长毛谷-烯	80.18	72.41	49.12	44.09	106.79^*
	9311-CK	64.34	63.38	55.97	28.49	57.15
	9311-烯	66.91	66.08	81.66^*	49.00^*	57.21
光化学猝灭系数	长毛谷-CK	1.54	1.58	0.30	0.43	0.48
	长毛谷-烯	1.63	1.65	0.27	0.39	0.67
	9311-CK	0.78	0.74	0.53	0.18	0.34
	9311-烯	0.86	0.85	0.74^*	0.52^*	0.46^*
非光化学猝灭系数	长毛谷-CK	1.00	1.00	0.92	0.97	0.96
	长毛谷-烯	1.00	1.00	0.89	0.95	0.92
	9311-CK	0.99	1.00	0.96	0.91	0.92
	9311-烯	0.99	1.00	0.96	0.96^**	0.95