摘要
板栗疫病病苗（ＣｒｙｐｈｏｎｅｃｔｒｉａＰａｒａｓｉｔｉｃａ）以成熟或未成熟的子囊壳和分生孢子器、子座及菌丝方式在树干、枝梢和栗实内越冬；此病菌在田间的传播形式是子囊孢子和分生孢子，远距离传播是靠苗木、接穗和栗实的调运；此病的始发期是３月中下旬，盛发期是５，６月份，抑制期是８，９月份高温季节和１２月至次年２月低温季节；新子座产生时期是从４月上旬开始，５月上中旬大量产生；分生孢子器形成的始期为４月中旬，５，６月份大量产生分生孢子器；分生孢子角产生时期从３月初至１２月上旬；越冬子囊壳，３月中下旬以后陆续产生子囊壳；新子座９月开始产生子囊壳，１０月上、中旬大量产生子囊壳，１０月上旬成熟的子囊孢子开始释放；越冬子囊孢子在田间３月下旬开始释放，直至１２月；子囊孢子室内喷射高度为２０ｃｍ；栗疫病菌生长最适温度为２５～３０℃，最低温度为５℃，最高温度为３５℃。
Through systemic investigation and study,we found that Endothia parasitic overwindersin the stem,branches,terminal shoots by means of mature or immature perithecia andpycnidia,stromata or hyphae;ascospores and conidia are dispersed by wind, rain,insects andmites;Endothia parasitic is spread distantly by the transport of grafted seedlings,chestnut vol-unteer seedlings,grafts and fruits;the onset phase of chestnut blight is in mid-late March andits vigorous period is in May or June;its restrain period is in the high temperature season ofAug.and Sept.and in the low temperature season from Dec. to Feb.of the next year,Newstromata begin to form in early April,and mostly form in May;pycnidia begin to form in midApril,and mostly form in May or June;conidia exudates are produced from March to early De-cember;overwindering stromata produce perithecia continuously after late March;new stroma-ta begin to produce perithecia in Sept.and mostly produce in Oct.mature ascospores beginreleasing in eariy Dec.ascospores are released from late March to Dec. in the estate;as-cospores are marbled about 20 centimetres high in the room.The optimum temperature for the development of Chestnut blight is 25～30℃,the low-est is 5 ℃,and the highest is 35℃.
出处
《江西农业大学学报》
CAS
CSCD
1995年第1期13-16,共4页
Acta Agriculturae Universitatis Jiangxiensis
关键词
板栗
并害
疫病
发生规律
江西
chestnut
chestnut blight
occurrence pattern
