1ST REPORT OF THE NATURAL OCCURRENCE OF PYRENOPEZIZA-BRASSICAE SUTTON ET RAWLINSON, THE APOTHECIAL STATE OF CYLINDROSPORIUM-CONCENTRICUM GREVILLE, IN BRASSICA CROPS IN NEW-ZEALAND
1ST REPORT OF THE NATURAL OCCURRENCE OF PYRENOPEZIZA-BRASSICAE SUTTON ET RAWLINSON, THE APOTHECIAL STATE OF CYLINDROSPORIUM-CONCENTRICUM GREVILLE, IN BRASSICA CROPS IN NEW-ZEALAND
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DOI：
10.1080/0028825x.1980.10426917
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发表时间：
1980-01-01
影响因子：
0.9
通讯作者：
CORBIN, JB
中科院分区：
文献类型：
--
作者：
CHEAH, LH;HARTILL, WFT;CORBIN, JB
1978年5月，花椰菜（B. oleracea L.变种葡萄孢属（botrytis L.），卷心菜（B. oleracea L.变种头花蓼属）和发芽花椰菜（B. oleracea L.变种（意大利语：Plenck），在Pukekohe区的部分地区。在病损上产生的分生孢子是典型的C. concentricum Greville，先前报道为致病病原体。三个月。其后，在这些作物的腐烂叶柄，叶脉及偶尔在落叶的叶片组织上发现大量黑色小凹点。用这些子囊菌的子囊孢子悬浮液接种芸苔幼苗，11-14天后出现典型的轻斑病症状。经鉴定，该病菌为芸苔类病菌（P. brassicae萨顿et Rawlinson）。这是第一个在新西兰自然发生的该物种的有性型（完美状态）的记录。
In May 1978, a severe epidemic of light leaf spot occurred in crops of cauliflowers (B. oleracea L. var. botrytis L.), cabbages (B. oleracea L. var. capitata L.) and sprouting broccoli (B. oleracea L. var. italica Plenck), in parts of the Pukekohe district. Conidia produced on lesions associated with the disease were typical of those of C. concentricum Greville, previously reported to be the causal pathogen. Three mo. later, numerous small black apothecia were found on decaying petioles, veins and occasionally lamina tissue of fallen leaves from these crops. When vegetable brassica seedlings were inoculated with ascospore suspensions obtained from these apothecia, typical symptoms of light leaf spot developed 11-14 days later. The apothecia were identified as those of P. brassicae Sutton et Rawlinson. This is the 1st record of the natural occurrence of the teleomorph (perfect state) of the species in New Zealand.