Effect of Photoperiod on Yield and Quality of Water Dropwort in Plant Factory

doi:10.11924/j.issn.1000-6850.casb2020-0556

Abstract

Abstract:

To screen out the optimum growth condition of water dropwort with high yield and better quality, Japan water dropwort was used as the test material, growth experiments were conducted with indoor LED lights under different photoperiods. Four light/dark alternates (3.5 h/2.5 h, 7 h/5 h, 14 h/10 h, and 10 h/14 h) were set, and the growth parameters, such as the content of vitamin C, total flavonoid, soluble protein, photosynthetic pigment and nitrate, were measured to explore the effects of photoperiod on the growth and quality of water dropwort. The results showed that prolonging illumination from 10 h (10 h light/14 h dark) to 14 h (7 h light/5 h dark-7 h light/5 h dark) could promote the plant height, total yield, and leaf quality of water dropwort.

Key words: plant factory, water dropwort, photoperiod, nutritional quality, microstructure

CLC Number:

S645.9

LI Zhengpu, TONG Jing, WANG Suna, LI Yanyan, WANG Liping, LIANG Hao, WU Zhanhui. Effect of Photoperiod on Yield and Quality of Water Dropwort in Plant Factory[J]. Chinese Agricultural Science Bulletin, 2022, 38(31): 38-42.

Figures/Tables 8

References 26

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处理	光周期
T1	3.5 h光-2.5 h暗-3.5 h光-2.5 h暗-3.5 h光-2.5 h暗-3.5 h光-2.5 h暗
T2	7 h光-5 h暗-7 h光-5 h暗
T3	14 h光-10 h暗
T4	10 h光-14 h暗

处理	光周期
T1	3.5 h光-2.5 h暗-3.5 h光-2.5 h暗-3.5 h光-2.5 h暗-3.5 h光-2.5 h暗
T2	7 h光-5 h暗-7 h光-5 h暗
T3	14 h光-10 h暗
T4	10 h光-14 h暗

处理	株高/cm	茎粗/mm	叶片长/cm	叶片宽/mm	叶片数/片	分蘖数/个
T1	28.67±0.67b	0.44±0.02b	6.67±0.67ab	3.97±0.26ab	14.33±1.76a	15.33±0.88b
T2	33.33±0.88a	0.47±0.03a	7.83±0.88a	4.37±0.22a	15.33±0.33a	17.67±0.67a
T3	27.33±0.88b	0.40±0.04c	6.19±0.58ab	3.88±0.09ab	14.10±1.00a	15.37±1.33b
T4	25.30± 0.58c	0.41±0.01c	5.57±0.60b	3.53±0.33b	13.09±1.53b	13.33±0.33c

处理	株高/cm	茎粗/mm	叶片长/cm	叶片宽/mm	叶片数/片	分蘖数/个
T1	28.67±0.67b	0.44±0.02b	6.67±0.67ab	3.97±0.26ab	14.33±1.76a	15.33±0.88b
T2	33.33±0.88a	0.47±0.03a	7.83±0.88a	4.37±0.22a	15.33±0.33a	17.67±0.67a
T3	27.33±0.88b	0.40±0.04c	6.19±0.58ab	3.88±0.09ab	14.10±1.00a	15.37±1.33b
T4	25.30± 0.58c	0.41±0.01c	5.57±0.60b	3.53±0.33b	13.09±1.53b	13.33±0.33c

处理	地上部鲜重	地下部鲜重	全株鲜重	地上部干重	地下部干重	全株干重	产量
T1	47.34±1.96b	20.14.±3.55b	67.48±4.66b	6.79±0.26b	0.59±0.04a	7.38±0.15b	1928.75±2.16b
T2	54.86±2.11a	20.27±7.18a	75.13±8.02a	7.59±0.04a	0.59±0.08a	8.18±0.07a	2147.57±7.19a
T3	48.36±4.43b	15.89±1.82c	64.25±3.87b	6.60±0.45b	0.50 ±0.04b	7.1±0.32b	1836.35±9.13b
T4	38.46±2.58c	15.30±0.32c	53.76±3.24c	5.79±0.43c	0.47±0.03c	6.26±0.05c	1536.69±1.61c