Effect of Bemisia tabaci B Infestation on Growth of Three Cucurbitaceae Host Plants

doi:10.11924/j.issn.1000-6850.casb19010126

Abstract

Abstract:

In this study, the effect of Bemisia tabaci B infestation on the growth and development of zucchini, pepo and towel gourd were investigated through measuring the growth indexes and chlorophyll content of these three Cucurbitaceae host plants by ruler measurement, oven drying and spectrophotometry after B. tabaci infestation. The results showed that feeding of B. tabaci B had a significant negative effect on the growth of all the three Cucurbitaceae host plants. After 30 d of infestation, the plant height, stem diameter and leaf area of zucchini all significantly decreased, with an inhibition ratio of 35.08%, 4.38% and 20.73%, respectively, compared with the uninfested plants, and the dry weight was 31.86% lower than that of the control. Plant height of the affected towel gourd significantly reduced compared with that of uninfested control plants, and the inhibition rate was 31.47%, while the stem diameter, leaf area and dry weight of towel gourd were not significantly affected after B. tabaci infestation. Similarly, the stem diameter and dry weight of pepo all obviously decreased compared with that of the control plants, however, the plant height and internode length of pepo increased, with an inhibition rate of -28.69% and -42.63%, respectively. Biochemical assays showed that the leaf chlorophyll content of the three host plants decreased significantly after B. tabaci B infestation, especially the zucchini, of which the chlorophyll a and b content decreased by 68.22% and 64.63%, respectively.

Key words: Bemisia tabaci B, Cucurbitaceae, growth indexes, chlorophyll content

CLC Number:

S436.429

Xin Liang, Haipeng Zhao, Xia Sun, Yanan Xu, Zhifei Jia, Ming Xue. Effect of Bemisia tabaci B Infestation on Growth of Three Cucurbitaceae Host Plants[J]. Chinese Agricultural Science Bulletin, 2020, 36(10): 133-139.

Figures/Tables 8

References 31

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寄主	处理	株高/cm				30 d抑制率/%
寄主	处理	0 d	10 d	20 d	30 d	30 d抑制率/%
瓠子	CK	6.03±0.58a	25.22±3.02b	64.19±6.55b	113.54±4.78b	-28.69±1.84
瓠子	T	6.02±0.47a	37.98±3.20a	86.18±4.43a	143.67±5.38a	-28.69±1.84
西葫芦	CK	7.49±0.20a	11.04±0.36a	13.53±0.33a	16.35±0.36a	35.08±1.96
西葫芦	T	7.30±0.23a	10.73±0.45a	12.22±0.36b	13.10±0.43b	35.08±1.96
丝瓜	CK	13.08±0.29a	31.93±1.22a	45.14±1.23a	60.36±2.58a	31.47±0.81
丝瓜	T	13.84±0.34a	28.99±1.10a	39.29±1.05b	46.09±1.37b	31.47±0.81

寄主	处理	株高/cm				30 d抑制率/%
寄主	处理	0 d	10 d	20 d	30 d	30 d抑制率/%
瓠子	CK	6.03±0.58a	25.22±3.02b	64.19±6.55b	113.54±4.78b	-28.69±1.84
瓠子	T	6.02±0.47a	37.98±3.20a	86.18±4.43a	143.67±5.38a	-28.69±1.84
西葫芦	CK	7.49±0.20a	11.04±0.36a	13.53±0.33a	16.35±0.36a	35.08±1.96
西葫芦	T	7.30±0.23a	10.73±0.45a	12.22±0.36b	13.10±0.43b	35.08±1.96
丝瓜	CK	13.08±0.29a	31.93±1.22a	45.14±1.23a	60.36±2.58a	31.47±0.81
丝瓜	T	13.84±0.34a	28.99±1.10a	39.29±1.05b	46.09±1.37b	31.47±0.81

寄主	处理	茎粗/cm				30 d抑制率/%
寄主	处理	0 d	10 d	20 d	30 d	30 d抑制率/%
瓠子	CK	0.469±0.010a	0.583±0.016a	0.615±0.014a	0.654±0.014a	40.83±1.88
瓠子	T	0.459±0.013a	0.520±0.014b	0.536±0.020b	0.571±0.019b	40.83±1.88
西葫芦	CK	0.452±0.013a	0.545±0.010a	0.583±0.009a	0.613±0.008a	4.38±5.13
西葫芦	T	0.419±0.009a	0.508±0.010a	0.544±0.011b	0.565±0.011b	4.38±5.13
丝瓜	CK	0.254±0.005a	0.270±0.005a	0.277±0.005a	0.301±0.009a	-32.35±36.39
丝瓜	T	0.259±0.005a	0.272±0.005a	0.282±0.003a	0.318±0.017a	-32.35±36.39

寄主	处理	茎粗/cm				30 d抑制率/%
寄主	处理	0 d	10 d	20 d	30 d	30 d抑制率/%
瓠子	CK	0.469±0.010a	0.583±0.016a	0.615±0.014a	0.654±0.014a	40.83±1.88
瓠子	T	0.459±0.013a	0.520±0.014b	0.536±0.020b	0.571±0.019b	40.83±1.88
西葫芦	CK	0.452±0.013a	0.545±0.010a	0.583±0.009a	0.613±0.008a	4.38±5.13
西葫芦	T	0.419±0.009a	0.508±0.010a	0.544±0.011b	0.565±0.011b	4.38±5.13
丝瓜	CK	0.254±0.005a	0.270±0.005a	0.277±0.005a	0.301±0.009a	-32.35±36.39
丝瓜	T	0.259±0.005a	0.272±0.005a	0.282±0.003a	0.318±0.017a	-32.35±36.39

寄主	处理	节间距/cm				30 d抑制率/%
寄主	处理	0 d	10 d	20 d	30 d	30 d抑制率/%
瓠子	CK	0.69±0.14a	6.42±0.48b	8.01±0.24b	8.27±0.18b	-42.63±0.93
瓠子	T	0.58±0.11a	8.29±0.63a	11.00±0.16a	11.43±0.30a	-42.63±0.93
西葫芦	CK	0.41±0.07a	1.15±0.11a	1.68±0.15a	2.28±0.14a	41.74±4.41
西葫芦	T	0.39±0.05a	0.75±0.06b	0.90±0.07b	1.50±0.14b	41.74±4.41
丝瓜	CK	0.36±0.12a	4.15±0.57a	7.46±0.50a	7.94±0.37a	2.94±1.8
丝瓜	T	0.43±0.11a	4.65±0.59a	7.64±0.37a	7.76±0.40a	2.94±1.8