Abstract
Chickpea (Cicer arietinum) is an edible legume grown widely for its nutritious seed, which is rich in protein, minerals, vitamins and dietary fibre. It’s a new crop in Kenya whose potential has not been utilized fully due to abiotic and biotic stresses that limit its productivity. The crop is affected mainly by Ascochyta blight (AB) which is widespread in cool dry highlands causing up to 100% yield loss. The objective of this study was to evalu- ate the resistance of selected chickpea genotypes to AB in dry highlands of Kenya. The study was done in 2 sites (Egerton University-Njoro) and Agricultural Training centre-ATC-Koibatek) for one season during long rains of 2010/2011 growing season. Thirty six genotypes from reference sets and mini-core samples introduced from ICR- SAT were evaluated. There were significant (P<0.001) differences in AB responses and grain yield performance in test genotypes in both sites. AB was more severe at Egerton-Njoro (mean score 5.7) than ATC-Koibatek (mean score 4.25), with subsequent low grain yield. Genotypes ICC7052, ICC4463, ICC4363, ICC2884, ICC7150, ICC15294 and ICC11627 had both highest grain yield in decreasing order (mean range 1790-1053 Kg ha-1) and best resist- ance to AB. Further evaluation is needed in other multi-locations and their use in breeding program determined especially because of their undesirable black seed color. Commercial varieties (LDT068, LDT065, Chania desi 1, and Saina K1) were all susceptible to AB, but with grain yield >1200 Kg ha-1. The findings of the study showed that chickpea should be sown during the short rains (summer) in the dry highlands of Kenya when conditions are drier and warmer and less favorable for AB infection. However yield could be increased by shifting the sowing date from dry season to long rain (winter) thus avoiding terminal drought if AB resistant cultivars with acceptable agronomic traits could be identified.
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Claims 10
Claim · model-written summary
Chickpea genotypes differed significantly in Ascochyta blight response and grain yield at both sites.
- Taxon
- Chickpea
Cicer arietinume0 - Interactor
- Ascochyta rabiei
.jpg?width=60)
Ascochyta rabieit0pathogen - Outcome
- AB responses and grain yield performancee1
- Qualifier
- P<0.001e1
- Setting
- both sitese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e1“There were significant (P<0.001) differences in AB responses and grain yield performance in test genotypes in both sites.”
t0“Evaluation of chickpea genotypes for resistance to Ascochyta blight (Ascochyta rabiei) disease in the dry highlands of Kenya”
Claim · model-written summary
Ascochyta blight was more severe at Egerton-Njoro than at ATC-Koibatek (mean score 5.7 against 4.25).
- Taxon
- ChickpeaCicer arietinume0
- Interactor
- Ascochyta rabieiAscochyta rabieit0pathogen
- Outcome
- mean scoree2
- Direction
- more severee2
- Value
- 5.7e2
- Comparator
- ATC-Koibateke2
- Setting
- Egerton-Njoroe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e2“AB was more severe at Egerton-Njoro (mean score 5.7) than ATC-Koibatek (mean score 4.25), with subsequent low grain yield.”
t0“Evaluation of chickpea genotypes for resistance to Ascochyta blight (Ascochyta rabiei) disease in the dry highlands of Kenya”
Claim · model-written summary
Chickpea at Egerton-Njoro had low grain yield, subsequent to the more severe blight there.
- Taxon
- ChickpeaCicer arietinume0
- Outcome
- grain yielde2
- Direction
- lowe2
- Setting
- Egerton-Njoroe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e2“AB was more severe at Egerton-Njoro (mean score 5.7) than ATC-Koibatek (mean score 4.25), with subsequent low grain yield.”
Claim · model-written summary
Chickpea genotypes ICC7052, ICC4463 and ICC4363 had the highest grain yield, in the range 1790-1053 Kg ha-1, with best resistance to blight.
- Taxon
- ChickpeaCicer arietinume0
- Material
- ICC7052, ICC4463, ICC4363e3
- Outcome
- highest grain yielde3
- Value
- 1790-1053 Kg ha-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e3“Genotypes ICC7052, ICC4463, ICC4363, ICC2884, ICC7150, ICC15294 and ICC11627 had both highest grain yield in decreasing order (mean range 1790-1053 Kg ha-1) and best resist- ance to AB.”
Claim · model-written summary
Chickpea genotypes ICC2884, ICC7150 and ICC15294 had the highest grain yield, in the range 1790-1053 Kg ha-1, with best resistance to blight.
- Taxon
- ChickpeaCicer arietinume0
- Material
- ICC2884, ICC7150, ICC15294e3
- Outcome
- highest grain yielde3
- Value
- 1790-1053 Kg ha-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e3“Genotypes ICC7052, ICC4463, ICC4363, ICC2884, ICC7150, ICC15294 and ICC11627 had both highest grain yield in decreasing order (mean range 1790-1053 Kg ha-1) and best resist- ance to AB.”
Claim · model-written summary
Chickpea genotype ICC11627 had the highest grain yield, in the range 1790-1053 Kg ha-1, with best resistance to blight.
- Taxon
- ChickpeaCicer arietinume0
- Material
- ICC11627e3
- Outcome
- highest grain yielde3
- Value
- 1790-1053 Kg ha-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e3“Genotypes ICC7052, ICC4463, ICC4363, ICC2884, ICC7150, ICC15294 and ICC11627 had both highest grain yield in decreasing order (mean range 1790-1053 Kg ha-1) and best resist- ance to AB.”
Claim · model-written summary
Commercial chickpea varieties were all susceptible to Ascochyta blight.
- Taxon
- ChickpeaCicer arietinume0
- Material
- Commercial varietiese4
- Outcome
- susceptible to ABe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e4“Commercial varieties (LDT068, LDT065, Chania desi 1, and Saina K1) were all susceptible to AB, but with grain yield >1200 Kg ha-1.”
Claim · model-written summary
Commercial chickpea varieties yielded above 1200 Kg ha-1 grain.
- Taxon
- ChickpeaCicer arietinume0
- Material
- Commercial varietiese4
- Outcome
- grain yielde4
- Value
- >1200 Kg ha-1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e4“Commercial varieties (LDT068, LDT065, Chania desi 1, and Saina K1) were all susceptible to AB, but with grain yield >1200 Kg ha-1.”
Claim · model-written summary
Chickpea should be sown during the short rains (summer) in the dry highlands of Kenya, when conditions are less favorable for blight infection.
- Taxon
- chickpeaCicer arietinume5
- Outcome
- sown during the short rains (summer)e5
- Setting
- dry highlands of Kenyae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The findings of the study showed that chickpea should be sown during the short rains (summer) in the dry highlands of Kenya when conditions are drier and warmer and less favorable for AB infection.”
Claim · model-written summary
Yield could be increased by shifting the sowing date from dry season to long rains, if blight-resistant cultivars with acceptable agronomic traits are identified.
- Taxon
- ChickpeaCicer arietinume0
- Treatment
- shifting the sowing date from dry season to long rain (winter)e6
- Outcome
- yielde6
- Direction
- increasede6
- Qualifier
- if AB resistant cultivars with acceptable agronomic traits could be identifiede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chickpea (Cicer arietinum) is an edible legume”
e6“However yield could be increased by shifting the sowing date from dry season to long rain (winter) thus avoiding terminal drought if AB resistant cultivars with acceptable agronomic traits could be identified.”
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