Abstract
The relationships of spike infection caused by the stripe rust fungus ( Puccinia striiformis West.) with awn expression, spike type and plant height among near‐isogenic lines of winter wheat ( Triticum aestivum L.) were studied at Pullman, Washington in 1966–67. The percentage and severity of lemma infection served to determine spike infection. Awned lines had 16 to 41% more lemmas infected than awnless sibs suggesting that the awn influences the incidence of the disease. Presence or absence of the club gene did not affect the occurrence of lemma infection. Plant height was related to the percentage and severity of lemma infection in all five populations tested, but this relationship varied. Short lines tended to be more vulnerable to lemma infection by stripe rust in some seasons and in certain genetic backgrounds. Yield losses correlated with the percentage and severity of lemma infection among near‐isogenic lines of C.I. 13253/7*‘Burt.’ Test weight differences were related to both the percentage and severity of lemma infection by the disease.
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Claims 6
Claim · model-written summary
Awned lines had 16 to 41% more infected lemmas than awnless sibs.
Verbatim
e0“Awned lines had 16 to 41% more lemmas infected than awnless sibs”
Claim · model-written summary
The club gene did not affect lemma infection.
Verbatim
e0“Presence or absence of the club gene did not affect the occurrence of lemma infection.”
Claim · model-written summary
Plant height related to lemma infection percentage and severity, with a varying relationship.
Not reportedDirection
Verbatim
e0“Plant height was related to the percentage and severity of lemma infection in all five populations tested, but this relationship varied.”
Claim · model-written summary
Short lines tended to be more vulnerable to stripe rust lemma infection in some seasons and backgrounds.
Verbatim
e0“Short lines tended to be more vulnerable to lemma infection by stripe rust in some seasons and in certain genetic backgrounds.”
Claim · model-written summary
Yield losses correlated with lemma infection percentage and severity in C.I. 13253/7*‘Burt.’ lines.
Not reportedDirection
Verbatim
e0“Yield losses correlated with the percentage and severity of lemma infection among near‐isogenic lines of C.I. 13253/7*‘Burt.’”
Claim · model-written summary
Test weight differences related to lemma infection percentage and severity.
Not reportedTaxonDirection
Verbatim
e0“Test weight differences were related to both the percentage and severity of lemma infection by the disease.”