10份青梗菜苗期耐熱性評價

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中圖分類號：S634.3 文獻標識碼：A 文章編號：0488-5368（2025）04-0030-06

Abstract：To comprehensively evaluate the heat tolerance of green-petiole，non - heading cabbage seedlings，1O germplasm materials were exposed to high-temperature stress in a light incubator.The effects of high -temperature stress on seedling growth and physiological parameters were analyzed using the heat damage index and the afflition function method.The results indicated that high-temperature stress generallyreduced growth parameters，including plant height，plant width，dryand fresh weight，and the root-to-shoot ratio of sedlings. At the same time，high -temperature stress also increased relative conductivity，prolinecontent，superoxide dismutase，catalaseactivities，and malondialdehyde content while decreasing soluble protein content in green -petiole，non-heading cabbage seedlings.Based on clustering analysis using the heat damage index and the afiliation function method，two highly heat-tolerant materials（22XS15，2XS156）and two heat-sensitive materials （22XS44，22XS56） were identified.

Key Words：Green petiole non - heading cabbage； Seedling；Heat tolerance；Heat damage index；Affilia-tion function method；Cluster analysis

不結球白菜（Brassica campestrisL. ssp.chinen-sisMakino）又稱小白菜，是十字花科蕓臺屬，源于長江中下游地區(qū)，目前我國各地均有栽培，主要集中在南方地區(qū)，是我國廣泛栽培的大宗蔬菜之一，種質資源豐富[]。（剩余7367字）