The feeding selectivity and adaptability of Stephanitis chinensis on different tea cultivars and its relationship with the content of biochemical substances in leaves
Studying the feeding selectivity and adaptability of Stephanitis chinensis Drake to different tea cultivars can provide insights for breeding resistant varieties and comprehensive management of S.chinensis.In this paper,the feeding preferences of SS.chinensis adults to eight different tea cultivars were tested,and the contents of soluble sugars,tea polyphenols,amino acids,and caffeine in the leaves of these tea cultivars were determined.Correlation between adult feeding preferences and biochemical substance contents in tea leaves was elucidated,and the adaptability of S.chinensis to different tea cultivars was observed.The results showed that SS.chinensis adults exhibited higher feeding preferences to'Zhongcha 108''Qiancha 1',and'Qianmei 419',while preference was lower to'Huangjinya''Qianmei 601',and'Taixuan 0310'.Pearson correlation analysis revealed no significant correlation between S.chinensis feeding selection rates and the contents of soluble sugars,free amino acids,or caffeine in tea leaves.However,a significant positive correlation was found between feeding selection rate and tea polyphenol content,indicating a preference to tea cultivars with higher tea polyphenol content.The adaptability of S.chinensis to different tea cultivars varied significantly,influencing its growth,development,and reproduction.SS.chinensis feeding on'Zhongcha 108'exhibited the highest survival rate,female adult lifespan,and egg production,whereas those feeding on'Taixuan 0310'showed the lowest egg production.Overall,'Taixuan 0310'demonstrated high resistance toS.chinensis,attributed to its lower tea polyphenol content,highlighting its potential for resistance in tea tree cultivation.
Stephanitis chinensistea cultivarsfeeding preferenceadaptabilitybiochemical componentsgrowth and development
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