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Resistance of Flax Varieties to Fusarium Wilt 1
Author(s) -
Knowles P. F.,
Houston B. R.
Publication year - 1953
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1953.00021962004500090005x
Subject(s) - fusarium wilt , citation , library science , resistance (ecology) , horticulture , biology , agronomy , computer science , fusarium oxysporum
SINCE flax was first established as a commercial crop in California in 1934, the varieties that have been most widely grown have been highly susceptible to wilt (Fusarium oxysporum f. lint (Bolley) Snyder and Hans.). These susceptible varieties are Punjab (C.I. 20), Punjab 47 (C.I. 1115) and Imperial (C.I. 1114), all Indian types, and all particularly adapted to irrigated areas of the Imperial Valley and the San Joaquin Valley, where flax is sown in the fall and harvested the following summer. Argentine (C.I. 463) is a susceptible variety that has been grown on a small acreage in coastal areas of San Mateo County as a summer crop. Wilt-resistant varieties that are being grown are De Anza (C.I. 1156) and Punjab 53 in the Imperial Valley, and Dakota (C.I. 1071), B5128 (C.I. 980) and Redwood (C.I. 1130) in San Mateo County. Fusarium wilt was observed for the first time in Imperial Valley in 1945 (8) and in San Mateo County in 1948 (9). Because Fusarium wilt had become established in some fields of both the Imperial Valley and San Mateo County in amounts to prohibit the production of wilt-susceptible varieties, and because many fields had small amounts of wilt present, it was considered necessary..to. find, or develop adapted varieties resistant to this disease. This report will present some of the data that have been collected in this phase of the breeding program with flax.