SPORULATION OF COCHLIOBOLUS-SATIVUS ON CROWN AND UNDERGROUND PARTS OF SPRING CEREALS IN RELATION TO WEATHER AND HOST SPECIES, CULTIVAR, AND PHENOLOGY

被引：8

作者：

DUCZEK, LJ

机构：

[1] Research Station Agriculture Canada, Saskatoon, SK, S7N 0X2

来源：

CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE | 1990年 / 12卷 / 03期

关键词：

D O I：

10.1080/07060669009500999

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Production of conidia of Cochliobolus sativus was first observed on the crowns and underground parts of spring cereals in early July in 1985 and 1987, and in late July in 1986. In 1985 and 1986, sporulation increased rapidly thereafter and leved off as plants reached maturity, while in 1987 sporulation continued to increase. Highest average conidial numbers per plant were 73 in 1985, 413 in 1986, and 550 in 1987. Field and greenhouse data indicated 59% of conidia were produced on crowns, 12% on crowns roots, and 29% on subcrown internodes, seed pieces, and seminal roots. There was no difference in sporulation between cultivars of wheat or of barley, and only in one of three years did sporulation on wheat and barley differ. More conidia were produced on wheat and barley than on rye and oat. The variable which had the highest association with sporulation was plant growth stage. Weather variables that were associated with sporulation were cumulative soil temperature and cumulative degrees days.

引用

页码：273 / 278

页数：6

共 17 条

[1]

Chinn S., Changes in the spore population of Cochliobolus sativus in Saskatchewan wheat fields. Can, J. Plant Sc, 45, pp. 288-291, (1965)

[2]

Chinn S., Cochliobolus sativus, Phytopathology, 66, pp. 1082-1084, (1976)

[3]

Chinn S., Influence of fungicide sprays on sporulation of Cochliobolus sativus on Cypress wheat and on conidial populations in soil, Phytopathology, 67, pp. 133-138, (1977)

[4]

Duczek L.J., Number and viability of conidia of Cochliobolus sativus in soil profiles in summerfallow fields in Saskatchewan, Can. J. Pathol, 3, pp. 12-14, (1981)

[5]

Ledingham R.J., Chinn S., Effect of grasses on Helminthosporium sativum in soil. Can, J. Plant Sci, 44, pp. 47-52, (1964)

[6]

Ledingham R.J., Atkinson T.G., Horricks J.S., Mills J.T., Piening L.J., Tinline R.D., Wheat losses due to common root rot in the prairie provinces of Canada, 1969-71, Can. Plant Dis. Surv, 53, pp. 113-122, (1973)

[7]

Marsh P.B., Taylor E.E., Bassier L.M., A guide to the literature on certain effects of light on fungi: Reproduction, morphology, pigmentation and phototropic phenomena, Plant Dis, Rep. Suppl, (1959)

[8]

Nair N.G., Behaviour of Bipolaris sorokiniana in the rhizosphere of wheat, Proc. Ind. Acad. Sci., B, 55, pp. 290-295, (1962)

[9]

Piening L.J., Atkinson T.G., Horricks J.S., Ledingham R.J., Mills J.T., Tinline R.D., Barley losses due to common root rot in the prairie provinces of Canada, 1970-72, Can. Plant Dis. Surv, 56, pp. 41-45, (1976)

[10]

Reis E.M., Effect of incorporation and the type of wheat crop remains on the multiplication of Helminthosporiumsativum in soil, Fitopatol. Bras, 9, pp. 537-541, (1984)

← 1 2 →