Analysis of spot blotch resistance and its association with yield and its related traits in bread wheat (Triticum aestivum L.) germplasm
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ArticleLanguage: English Publication details: Jharkhand, India : National Environmentalists Association, 2016.Subject(s): Online resources:
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The Bioscan v.11, no. 2, p. 921-924Summary: The present investigation was carried out to gather information about the germplasm accessions possessing resistance to spot blotch caused by the fungus Bipolaris sorokinana Sacc. In Borok. Shoem. and its association with morpho agronomic traits. Two Hundred germplasm accessions including four checks, two each resistant (Chirya 3 and Francolin) and susceptible (Sonalika and Ciano T 79) were evaluated in Augmented Block Design (ABD) at the N.E. Borlaug Crop Research Centre, G. B. Pant. University of Agriculture & Technology, Pantnagar in 2013-14.Sufficient genetic variability was present in the germplasm accessions for disease severity estimated by the disease scores was recorded at three different growth stages (GS), viz., GS 63 (beginning of anthesis to half complete), GS 69 (anthesis complete) and GS 77 (late milking). Germplasm accessions were grouped into highly resistant, moderately resistant, moderately susceptible and susceptible categories under epiphytotic conditions. Spot blotch severity exhibit negative correlation with grain yield(-0.272), thousand grain weight (-0.735), spike length (-0.289), number of spikelets per spike (-0.355) and number of grain per spike (- 0.342).Resistant accessionswhich are positively associated with high yield can be used in hybridization scheme for developing improved high yielding spot blotch resistant varieties.
| Item type | Current library | Collection | Call number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|
| Article | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | Available |
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The present investigation was carried out to gather information about the germplasm accessions possessing resistance to spot blotch caused by the fungus Bipolaris sorokinana Sacc. In Borok. Shoem. and its association with morpho agronomic traits. Two Hundred germplasm accessions including four checks, two each resistant (Chirya 3 and Francolin) and susceptible (Sonalika and Ciano T 79) were evaluated in Augmented Block Design (ABD) at the N.E. Borlaug Crop Research Centre, G. B. Pant. University of Agriculture & Technology, Pantnagar in 2013-14.Sufficient genetic variability was present in the germplasm accessions for disease severity estimated by the disease scores was recorded at three different growth stages (GS), viz., GS 63 (beginning of anthesis to half complete), GS 69 (anthesis complete) and GS 77 (late milking). Germplasm accessions were grouped into highly resistant, moderately resistant, moderately susceptible and susceptible categories under epiphytotic conditions. Spot blotch severity exhibit negative correlation with grain yield(-0.272), thousand grain weight (-0.735), spike length (-0.289), number of spikelets per spike (-0.355) and number of grain per spike (- 0.342).Resistant accessionswhich are positively associated with high yield can be used in hybridization scheme for developing improved high yielding spot blotch resistant varieties.
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CIMMYT Informa : 2022 (Octubre 25, 2018)
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