Gibberellin and Foliar Fertilizer: Effects on Pre-basic Seeds of Potato Production by Aeroponics

doi:10.11923/j.issn.2095-4050.cjas2020-0260

Abstract

Abstract:

In order to clarify the effects of foliar application of exogenous hormone gibberellin (GA), urea (UREA) and calcium nitrate (CN) on potato production by aeroponics, ‘Zhongshu 5’ and ‘Zhongshu 19’ were used as materials, clear water (CK), GA, UREA, CN, GA+UREA, GA+CN were sprayed on leaves, and the effects of the treatments on growth and yield were studied comparatively. The plant height, stem diameter, leaf area index, number of stolon branches, single-plant yield and tuber number per plant were increased by GA, GA+UREA and GA+CN, while the chlorophyll content index of leaves was decreased significantly. Under GA, GA+UREA and GA+CN, the single-plant yield and tuber number per plant of ‘Zhongshu 5’ were increased by 42.0% and 34.0%, 50.9% and 48.8%, and 30.5% and 39.0%, respectively; the single-plant yield and tuber number per plant of ‘Zhongshu 19’ were increased by 36.4% and 29.9%, 35.8% and 44.8%, and 43.7% and 44.8%, respectively, while the effects of signal application of URAE or CN on yield were not significant. The experiment indicates that the spraying treatments containing GA could promote the vegetative growth, thus increasing the tuber number per plant of potato plants by aeroponics.

Key words: aeroponics, foliar fertilizer, gibberellin, urea, calcium nitrate, tuber number per plant

CLC Number:

S532

LIAO Feifei, LIU Xinggui, WANG Kexiu, DU Yongli, XIONG Hu, ZHANG Deyin. Gibberellin and Foliar Fertilizer: Effects on Pre-basic Seeds of Potato Production by Aeroponics[J]. Journal of Agriculture, 2022, 12(4): 18-23.

Figures/Tables 10

References 29

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处理	中薯5号			中薯19号
处理	匍匐茎长/cm	匍匐茎数/条	匍匐茎分枝数/条	匍匐茎长/cm	匍匐茎数/条	匍匐茎分枝数/条
CK	5.4b	5.5b	6.5b	17.0b	2.8b	2.0b
GA	21.1a	6.5a	26.5a	32.0a	4.0a	8.3a
UREA	7.4b	5.5b	9.3b	12.6b	3.0ab	1.5b
CN	7.0b	5.3b	7.5b	11.9b	3.8ab	1.8b
GA+UREA	23.4a	6.0ab	27.8a	36.3a	3.8ab	10.0a
GA+CN	24.2a	5.8ab	26.3a	31.6a	3.5ab	9.0a

处理	中薯5号			中薯19号
处理	匍匐茎长/cm	匍匐茎数/条	匍匐茎分枝数/条	匍匐茎长/cm	匍匐茎数/条	匍匐茎分枝数/条
CK	5.4b	5.5b	6.5b	17.0b	2.8b	2.0b
GA	21.1a	6.5a	26.5a	32.0a	4.0a	8.3a
UREA	7.4b	5.5b	9.3b	12.6b	3.0ab	1.5b
CN	7.0b	5.3b	7.5b	11.9b	3.8ab	1.8b
GA+UREA	23.4a	6.0ab	27.8a	36.3a	3.8ab	10.0a
GA+CN	24.2a	5.8ab	26.3a	31.6a	3.5ab	9.0a

处理	叶面积指数
处理	中薯5号	中薯19号
CK	3.2d	2.8d
GA	7.8b	7.0b
UREA	5.7c	4.1c
CN	3.3d	4.2c
GA+UREA	7.8b	6.6b
GA+CN	9.5a	9.2a

处理	叶面积指数
处理	中薯5号	中薯19号
CK	3.2d	2.8d
GA	7.8b	7.0b
UREA	5.7c	4.1c
CN	3.3d	4.2c
GA+UREA	7.8b	6.6b
GA+CN	9.5a	9.2a

处理	叶绿素含量指数
处理	中薯5号	中薯19号
CK	19.8a	19.7a
GA	9.3b	9.4b
UREA	19.8a	19.9a
CN	19.2a	19.6a
GA+UREA	10.0b	9.4b
GA+CN	9.3b	8.9b