Heritability of aflatoxin resistance traits and correlation with drought tolerance traits in peanut
Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F 4:7 and F 4:8 generations in field trials under drought and non–drought conditions to investigate the heritability ( h 2) of aflatoxin resistance traits,...
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Published in: | Field crops research Vol. 117; no. 2; pp. 258 - 264 |
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03-06-2010
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Abstract | Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F
4:7 and F
4:8 generations in field trials under drought and non–drought conditions to investigate the heritability (
h
2) of aflatoxin resistance traits, and phenotypic (
r
P
) and genotypic (
r
G
) correlations between aflatoxin resistance and drought tolerance traits. Data were collected for seed infection by
Aspergillus flavus, aflatoxin contamination, biomass, pod yield, drought tolerance index (DTI) of biomass (BIO), DTI of pod yield (PY), harvest index (HI), SPAD chlorophyll meter reading (SCMR) and specific leaf area (SLA). High genotype x environment interactions and low to moderate h
2 for seed infection and aflatoxin contamination (0.30 to 0.65) were observed, indicating difficulty with directly improving these traits. However, seed infection and aflatoxin contamination had significant negative
r
G
with drought tolerance traits, especially with pod yield (–0.29** to–0.93**) under drought conditions, indicating that genotype selection for drought tolerance could improve aflatoxin resistance. Moreover,
r
G
were strong between seed infection and aflatoxin contamination with HI (–0.33** to–0.89**), SLA (0.50** to 0.92**) and SCMR (–0.60** to–0.83**). The results indicate that HI, SLA, or SCMR traits under long-term drought conditions could be used as indirect indicators of aflatoxin resistance. Because measurements for SLA and SCMR are simple, realizable and rapid, SLA and SCMR may be practical and cost effective for application in large scale breeding programs. |
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AbstractList | Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F sub(4:7) and F sub(4:8) generations in field trials under drought and non-drought conditions to investigate the heritability (h super(2)) of aflatoxin resistance traits, and phenotypic (r sub()P and genotypic (r sub()G correlations between aflatoxin resistance and drought tolerance traits. Data were collected for seed infection by Aspergillus flavus, aflatoxin contamination, biomass, pod yield, drought tolerance index (DTI) of biomass (BIO), DTI of pod yield (PY), harvest index (HI), SPAD chlorophyll meter reading (SCMR) and specific leaf area (SLA). High genotype x environment interactions and low to moderate h super(2) for seed infection and aflatoxin contamination (0.30 to 0.65) were observed, indicating difficulty with directly improving these traits. However, seed infection and aflatoxin contamination had significant negative r sub()Gwith drought tolerance traits, especially with pod yield (-0.29** to-0.93**) under drought conditions, indicating that genotype selection for drought tolerance could improve aflatoxin resistance. Moreover, r sub()Gwere strong between seed infection and aflatoxin contamination with HI (-0.33** to-0.89**), SLA (0.50** to 0.92**) and SCMR (-0.60** to-0.83**). The results indicate that HI, SLA, or SCMR traits under long-term drought conditions could be used as indirect indicators of aflatoxin resistance. Because measurements for SLA and SCMR are simple, realizable and rapid, SLA and SCMR may be practical and cost effective for application in large scale breeding programs. Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F 4:7 and F 4:8 generations in field trials under drought and non–drought conditions to investigate the heritability ( h 2) of aflatoxin resistance traits, and phenotypic ( r P ) and genotypic ( r G ) correlations between aflatoxin resistance and drought tolerance traits. Data were collected for seed infection by Aspergillus flavus, aflatoxin contamination, biomass, pod yield, drought tolerance index (DTI) of biomass (BIO), DTI of pod yield (PY), harvest index (HI), SPAD chlorophyll meter reading (SCMR) and specific leaf area (SLA). High genotype x environment interactions and low to moderate h 2 for seed infection and aflatoxin contamination (0.30 to 0.65) were observed, indicating difficulty with directly improving these traits. However, seed infection and aflatoxin contamination had significant negative r G with drought tolerance traits, especially with pod yield (–0.29** to–0.93**) under drought conditions, indicating that genotype selection for drought tolerance could improve aflatoxin resistance. Moreover, r G were strong between seed infection and aflatoxin contamination with HI (–0.33** to–0.89**), SLA (0.50** to 0.92**) and SCMR (–0.60** to–0.83**). The results indicate that HI, SLA, or SCMR traits under long-term drought conditions could be used as indirect indicators of aflatoxin resistance. Because measurements for SLA and SCMR are simple, realizable and rapid, SLA and SCMR may be practical and cost effective for application in large scale breeding programs. Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F₄:₇ and F₄:₈ generations in field trials under drought and non-drought conditions to investigate the heritability (h ²) of aflatoxin resistance traits, and phenotypic (r P ) and genotypic (r G ) correlations between aflatoxin resistance and drought tolerance traits. Data were collected for seed infection by Aspergillus flavus, aflatoxin contamination, biomass, pod yield, drought tolerance index (DTI) of biomass (BIO), DTI of pod yield (PY), harvest index (HI), SPAD chlorophyll meter reading (SCMR) and specific leaf area (SLA). High genotype x environment interactions and low to moderate h² for seed infection and aflatoxin contamination (0.30 to 0.65) were observed, indicating difficulty with directly improving these traits. However, seed infection and aflatoxin contamination had significant negative r G with drought tolerance traits, especially with pod yield (-0.29** to-0.93**) under drought conditions, indicating that genotype selection for drought tolerance could improve aflatoxin resistance. Moreover, r G were strong between seed infection and aflatoxin contamination with HI (-0.33** to-0.89**), SLA (0.50** to 0.92**) and SCMR (-0.60** to-0.83**). The results indicate that HI, SLA, or SCMR traits under long-term drought conditions could be used as indirect indicators of aflatoxin resistance. Because measurements for SLA and SCMR are simple, realizable and rapid, SLA and SCMR may be practical and cost effective for application in large scale breeding programs. |
Author | Patanothai, A. Akkasaeng, C. Vorasoot, N. Jogloy, S. Kesmala, T. Wongkaew, S. Arunyanark, A. |
Author_xml | – sequence: 1 givenname: A. surname: Arunyanark fullname: Arunyanark, A. organization: Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand – sequence: 2 givenname: S. surname: Jogloy fullname: Jogloy, S. email: sanun@kku.ac.th organization: Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand – sequence: 3 givenname: S. surname: Wongkaew fullname: Wongkaew, S. organization: Institute of Agriculture Technology, School of Crop Production Technology, Suranaree University of Technology, Muang, Nakhonratchasima, 30000, Thailand – sequence: 4 givenname: C. surname: Akkasaeng fullname: Akkasaeng, C. organization: Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand – sequence: 5 givenname: N. surname: Vorasoot fullname: Vorasoot, N. organization: Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand – sequence: 6 givenname: T. surname: Kesmala fullname: Kesmala, T. organization: Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand – sequence: 7 givenname: A. surname: Patanothai fullname: Patanothai, A. organization: Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand |
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CitedBy_id | crossref_primary_10_3389_fpls_2019_00030 crossref_primary_10_1007_s10658_016_0879_9 crossref_primary_10_1016_j_fcr_2013_10_019 crossref_primary_10_3920_WMJ2017_2248 crossref_primary_10_3923_ijpbg_2017_31_38 crossref_primary_10_1016_j_fcr_2010_05_007 crossref_primary_10_3146_0095_3679_43_1_36 crossref_primary_10_3390_agronomy8020010 |
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Keywords | specific leaf area drought tolerance seed infection Aflatoxin contamination SPAD chlorophyll meter reading |
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Snippet | Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F
4:7 and F
4:8... Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F₄:₇ and F₄:₈... Drought tolerance can be an effective tool for improving aflatoxin resistance in peanut. We evaluated 140 peanut families from 4 crosses in the F sub(4:7) and... |
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SubjectTerms | Aflatoxin contamination aflatoxins Arachis hypogaea Aspergillus flavus chlorophyll crop yield disease resistance drought drought tolerance dry matter accumulation environmental factors field crops food contamination genetic correlation genetic resistance genetic variation genotype-environment interaction harvest index heritability leaf area microbial contamination peanuts phenotypic correlation plant pathogenic fungi seed infection SPAD chlorophyll meter reading specific leaf area water stress |
Title | Heritability of aflatoxin resistance traits and correlation with drought tolerance traits in peanut |
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