为探求新疆野扁桃(Amygdalus ledebouriana)实生更新受限的障碍因子,更好的保护该种质资源和种群,以新疆巴尔鲁克山野扁桃当年种子为试验材料,研究种子吸水特性、不同层积时间、不同质量浓度赤霉素(GA3)和不同基质处理对种子休眠与萌发的影响,并对萌发抑制物进行探究.结果表明:(1)完整种子在层积80 d后解除自然休眠,而去种皮种子不需要层积就可萌发,添加300 mg·L-1 GA3培养可以提前打破去种皮种子休眠并提高发芽率.(2)萌发抑制物主要存在于外果皮和中果皮.(3)在原生境土壤中的萌发率比在营养土中高.
In order to explore the obstacle factors of regeneration of Amygdalus ledebouriana in Xinjiang,and to better protect the germplasm resources and population,the seeds of A.ledebouriana in Barluk Mountain of Xinjiang were used as experimental materials,and the effects of seed water absorption characteristics,different stacking time,different concentrations of GA3 and different substrate treatments on the dormancy and germination characteristics of A.ledebouriana seeds and the germination inhibitors in A.ledebouriana were explored respectively.The results showed that:(1)The natural dormancy of whole seeds was relieved after 80 days stratification,while the decorticated seeds could germinate without stratification,and the addition of 300 mg·L-1 GA3 could break the dormancy of decorticated seeds in advance and improve the germination rate.(2)The germination inhibitors in A.ledebouriana seeds mainly existed in exocarp and mesocarp.(3)The germination rate of A.ledebouriana seeds in the original habitat soil was higher than that in the nutrient soil.
管岳;申文靖;宋晓萌;王妍欣;阿克居力得孜·努尔改里得;陈鹏飞;周龙
新疆农业大学园艺学院,乌鲁木齐 830052喀什理工职业技术学院,莎车县 844700
生物学
野扁桃;种子萌发;低温层积;萌发抑制物
Amygdalus ledebouriana;seeds germination;cold stratification;germination inhibitor
《植物研究》 2024 (003)
400-409 / 10
2022自治区高校基本科研业务费项目(XJEDU2022Z004);新疆维吾尔自治区林业和草原局研发专项(XJFG202003).
10.7525/j.issn.1673-5102.2024.03.009
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