The nature and inheritance of field resistance to late blight (Phytophthora infestans) in potatoes

1970 ◽  
Vol 47 (8) ◽  
pp. 279-288 ◽  
Author(s):  
W. Black
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Field Resistance

STUDIES ON FERTILITY AND LATE BLIGHT RESISTANCE IN SOLANUM BULBOCASTANUM DUN. IN MEXICO

1959 ◽  
Vol 37 (1) ◽  
pp. 41-49 ◽  
Author(s):  
K. M. Graham ◽  
J. S. Niederhauser ◽  
Leopoldo Servin
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Late Blight Resistance ◽  
Field Resistance ◽  
Blight Resistance ◽  
Solanum Bulbocastanum ◽  
Mexican Isolate

Solanum balbocastanum Dun. was collected extensively throughout its range in Mexico and Guatemala. Experimental self- and cross-pollinations showed that the species is highly self-sterile and consists of cross-sterile and cross-fertile individuals. Self-sterility may be due to the presence of incompatibility factors or to triploidy. Authentic hybrids were produced between S. bulbocastanum and S. trifidum Correll, and between S. bulbocastanum and S. pinnatisectum Dun.After inoculation with race 1.2.3.4 of Phytophthora infestans three types of reaction were observed among 1148 seedlings of S. bulbocastanum: immunity with no perceptible lesions, resistance expressed by non-sporulating lesions of the hypersensitive type, and susceptibility indicated by large sporulating necrotic lesions. Seedlings resistant to an isolate of race 1.2.3.4 of Canadian origin did not always show the same level of resistance to a Mexican isolate of the same race. Varying degrees of field resistance were observed among seedling plants, while tuber-propagated plants were generally field immune. Solanum bulbocastanum is considered a mixture of resistant and susceptible genotypes.

scholarly journals Field Evaluation of Potato Resistance Against Phytophthora Infestans under Natural Infection Pressure

2017 ◽  
Vol 76 (1) ◽  
pp. 25-28
Author(s):  
Jarosław Plich ◽  
Beata Tatarowska
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Potato Breeding ◽  
Natural Infection ◽  
Field Evaluation ◽  
Field Resistance ◽  
Field Conditions ◽  
Breeding Programs ◽  
Infection Pressure ◽  
Potato Resistance

Abstract Although development of potato cultivars resistant to late blight has long been one of the primary goals of potato breeding programs, several different methods of field resistance evaluation have been used by potato breeders. Recently, within the EucaBlight network (www.euroblight.net), common methods of late blight evaluation have been agreed on, and these methods are currently highly recommended for use by all those interested in evaluating the resistance of the potato to late blight. Here, we describe a method of evaluating potato resistance in field conditions routinely used at Młochów Research Center, which is compliant with recommendations of the EucaBlight protocol.

Discerning strains of Phytophthora infestans the causative agent of potato late blight by SSCP analysis of virulence genes

2018 ◽  
Vol 34 (6) ◽  
pp. 4-11
Author(s):  
V.K. Chizhik ◽  
◽  
E.A. Sokolova ◽  
V.V. Martynov ◽  
M.A. Kuznetsova ◽  
...  
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Causative Agent ◽  
Virulence Genes ◽  
Potato Late Blight ◽  
Sscp Analysis

scholarly journals Gene pyramiding for elite tomato genotypes against ToLCV (Begomovirus spp.), late blight (Phytophthora infestans) and RKN (Meloidogyne spp.) for northern India farmers

2019 ◽  
Vol 25 (5) ◽  
pp. 1197-1209 ◽  
Author(s):  
Ashish Kumar ◽  
Salesh Kumar Jindal ◽  
Major Singh Dhaliwal ◽  
Abhishek Sharma ◽  
Sukhjeet Kaur ◽  
...  
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Gene Pyramiding ◽  
Northern India ◽  
Meloidogyne Spp ◽  
Tomato Genotypes
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