摘要
以纽曼姐妹、红魔王、雀可克、高山圣火和高山朝霞5个月季(Rosa hybrida)品种为试材,于生长季观测不同品种的生长势及冬季自然降温过程中相对电导率、丙二醛(MDA)、可溶性糖、淀粉含量以及超氧化物岐化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)、苯丙氨酸解氨酶(PAL)活性的变化,以期明确不同月季品种抗寒性与生理生化指标的关系。结果表明,仅高山朝霞、高山圣火可在吉林省内正常越冬,且花期较长。随着温度的降低,所有月季品种相对电导率呈先上升后下降再上升的趋势,MDA含量整体呈上升趋势,其中高山朝霞、高山圣火在-11℃时相对电导率较低,分别为68.58%和70.83%,表明上述2个月季品种可抵御低温的危害,细胞内的电解质外渗低于其他3个供试品种,细胞膜受损程度较轻;雀可克在12℃时MDA含量高达88.13μmol/g,该品种在12℃时已无法正常生长。脯氨酸、可溶性糖含量整体都呈上升趋势,淀粉含量则呈先上升后下降的趋势,其中红魔王和雀可克的可溶性糖含量始终显著低于其他3个品种,对低温环境抵抗能力较弱。各月季品种SOD、POD、CAT、PAL活性降温初期均呈上升趋势,可抵御寒冷。
Taking five rose varieties including Soeur Emmanuelle,Red Devil,Chocok,Mountain sunrise,and Alpine flame as meterials,during the growing season,the growth vigor of each variety was observed,and changes in physiological and biochemical indicators were measured during the natural cooling process in winter.These indicators included relative conductivity,malondialdehyde(MDA)content,soluble sugar and starch content,as well as the activities of superoxide dismutase(SOD),catalase(CAT),peroxidase(POD),and phenylalanine ammonia-lyase(PAL).The aim was to clarify the relationship between cold resistance and these physiological and biochemical indicators in different rose varieties.The results showed that only Alpine flame and Mountain sunrise could overwinter normally in Jilin Province,and had a relatively long flowering period.As temperatures decreased,the relative conductivity of all varieties initially increased,then decreased,and then increased again.The MDA content generally showed an upward trend.At-11℃,Alpine flame and Mountain sunrise exhibited lower relative electrical conductivity values(68.58%and 70.83%,respectively),indicating that these two varieties could better withstand low temperatures,with less electrolyte leakage and milder cell membrane damage compared to the other three varieties.However,Chocok had an MDA content as high as 88.13μmol/g at 12℃,indicating it could no longer grow normally at this temperature.Proline and soluble sugar content generally increased,while starch content initially rose and then declined.The soluble sugar content of Red Devil and Chocok was consistently significantly lower than that of the other three varieties,indicating weaker resistance to low temperatures.The activities of SOD,POD,CAT,and PAL in all varieties initially increased during the early stages of cooling,demonstrating their role in cold resistance.
作者
陈思羽
李立梅
金桂香
于海媛
戴维
吕梦燕
张立民
陈士刚
李娟
于杨
梁爽
任军
CHEN Si-yu;LI Li-mei;JIN Gui-xiang;YU Hai-yuan;DAI Wei;LYU Meng-yan;ZHANG Li-min;CHEN Shi-gang;LI Juan;YU Yang;LIANG Shuang;REN Jun(Jilin Provincial Academy of Forestry Sciences(Jilin Provincial Forestry Biological Control Center),Changchun 130000,China;不详)
出处
《湖北农业科学》
2025年第12期124-130,共7页
Hubei Agricultural Sciences
基金
吉林省自然科学基金项目(YDZJ202301ZYTS362)。
