干旱地区农业研究2026，Vol.44Issue(3)：58-64,138,8.DOI:10.7606/j.issn.1000-7601.2026.03.06
半夏种茎生长温限与珠芽形成关键发育转换的生理基础
Temperature threshold for pinellia tuber growth and the physiological basis for key developmental transitions in bulbils formation
摘要
Abstract
To explore the effects of different temperatures on the growth of Pinellia tubers and the formation of bulbils,as well as the physiological basis for bulbils'structural development under optimal temperatures,tempera-ture-controlled pot experiments were conducted at 10℃,15℃,20℃,25℃,and 30℃ to identify the most suitable temperature.Subsequently,Pinellia tubers were cultivated in pots at this selected temperature.Physiological indica-tors including sugar metabolism,nitrogen metabolism,and endogenous hormone content were measured in petioles without bulbils(YB_1)and those with punctate bulbils(YB_2).The results showed that different temperatures significantly affect the growth of Pinellia tubers and the formation of bulbils.Among these conditions,bulbils reached a 100％formation rate earliest at 25℃.At the end of the experiment,petiole lengths under 10℃,15℃,and 20℃ treatments were 11.05 num,32.37 num,and 105.05 mm,respectively,significantly lower than those at 25℃(125.27 mm)and 30℃(171.37 mm).At 25℃,bulbils reached a diameter of 3.43 mm,whereas at other temperatures,only a single punctiform bulbil structure was visible,and its diameter could not be measured.Com-pared to YB_1,YB_2 at 25℃ showed increases in glucose,sucrose,and total amino acid content by 91.25％,22.61％,and 17.88％,respectively;auxin,abscisic acid,ethylene,and brassinosteroid contents increased by 22.66％,9.94％,16.31％,and 24.88％,respectively,while gibberellin content decreased by 10.23％.Based on the comprehensive experimental results,25℃ is considered the optimal temperature for Pinellia tuber growth and bulbils formation.The synergistic changes in sugar metabolism and endogenous hormones may serve as key regulato-ry factors in bulbils'structure development.关键词
半夏/种茎生长/温度/珠芽形成/糖代谢/氮代谢/内源激素Key words
pinellia ternata/tuber growth/temperature/bulbil formation/sugar metabolism/nitrogen metabo-lism/endogenous hormones分类
农业科技引用本文复制引用
贾袭伟,久西加,刘鹏,洪洲,赵燕,郭超,曾翠云,杜弢..半夏种茎生长温限与珠芽形成关键发育转换的生理基础[J].干旱地区农业研究,2026,44(3):58-64,138,8.基金项目
宁夏自然科学基金(2024AAC03354,2024AAC03351) （2024AAC03354,2024AAC03351）
国家中药材产业技术体系建设专项资金(CARS-21) （CARS-21）
甘肃省科技计划项目(21YF5NA130,22CX8NA069) （21YF5NA130,22CX8NA069）
