Analysis on Difference of Nutrient Content in Leaf Tissue of Resistant and Sensitive Cassava Varieties Before and After Damage to Tetranychus cinnabarinus

doi:10.3969/j.issn.1000-2561.2020.09.020

Abstract

Abstract:

The difference of nutrient contents in leaf tissues of resistant and susceptible standard cassava varieties before and after being damaged by Tetranychus cinnabarinus was analyzed by spectrophotometry. The content of free amino acids (FAA), soluble sugars (WSS), soluble nitrogen (SN) in the leaves of C1115, a standard cassava cultivar for mite resistance, significantly decreased damaged by T. cinnabarinus. The content of FAA, WSS and SN 1, 4 and 8 days after damaged by T. cinnabarinus was, 69.69%, 69.29% and 63.42%, 73.16%, 73.71% and 72.75%, 45.97%, 46.21% and 46.13%, respectively (P<0.05) of that before damaged. S/N increased significantly, which was 159.15%, 159.46% and 157.83% 1, 4 and 8 days after damaged by T. cinnabarinus respectively (P<0.05) of that before damaged, while the content of free proline (Pro) did not change significantly. There was no significant difference in the content of FAA, WSS between the leaves of the mite-susceptible reference standard cassava variety BRA900 after damaged for 1, 4 and 8 days. The content of SN increased significantly, which was 148.50%, 148.73% and 148.77% 1, 4 and 8 days after damaged by Tetranychus cinnabarinus respectively of that before damaged. S/N decreased significantly, which was 62.61%, 61.48% and 61.92% of that before damaged. The content of free proline (Pro) increased significantly, which was 373.82%, 367.33% and 362.61% of that before damaged.

Key words: Tetranychus cinnabarinus, mite-resistant reference standard cassava cultivar C1115, mite-susceptible reference standard cassava cultivar BRA900, nutrients, difference analysis

CLC Number:

ZHANG Zhe,CHEN Qing,LIANG Xiao,WU Chunling,CHEN Qian,Zhang Yindong. Analysis on Difference of Nutrient Content in Leaf Tissue of Resistant and Sensitive Cassava Varieties Before and After Damage to Tetranychus cinnabarinus[J]. Chinese Journal of Tropical Crops, 2020, 41(9): 1865-1869.

Figures/Tables 5

Fig. 1 Change of free amino acid content in leaves of mite-resistant and mite-susceptible reference standard cassava cultivars after damaged by T. cinnabarinus Different lowercase letters mean significant difference (P<0.05).

Fig. 2 Change of sugar content in leaves of mite-resistant and mite-susceptible reference standard cassava cultivars after damaged by T. cinnabarinus Different lowercase letters mean significant difference (P<0.05).

Fig. 3 Change of nitrogen content in leaves of mite-resistant and mite-susceptible reference standard cassava cultivars after damaged by T. cinnabarinus Different lowercase letters mean significant difference (P<0.05).

Fig. 4 Change of S/N in leaves of mite-resistant and mite-susceptible reference standard cassava cultivars after damaged by T. cinnabarinus Different lowercase letters mean significant difference (P<0.05).

Fig. 5 Change of proline content in leaves of mite- resistant and mite-susceptible reference standard cassava cultivars after damaged by T. cinnabarinus Different lowercase letters mean significant difference (P<0.05).

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