Molecular variability, population dynamics and integrated management of Fusarium udum Butler causing pigeonpea wilt
KrishiKosh
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Title |
Molecular variability, population dynamics and integrated management of Fusarium udum Butler causing pigeonpea wilt
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Creator |
P. S, Prasad
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Contributor |
M, Saifulla
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Subject |
diseases, fungi, pigeonpeas, genotypes, sowing, planting, biological development, pathogens, irrigation, biological phenomena
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Description |
Pigeonpea is an important pulse crop grown for its dhal and ranks sixth among legumes in area and production. It is a major source of protein to about 20 % of the world population and an abundant source of minerals and vitamins. The main constraints in boosting the yield of the crop are its susceptibility to diseases and insects. It is known to be affected by more than hundred pathogens, among them important disease which affect the crop are Fusarium wilt. Keeping this in view, 33 wilt affected plants were collected from different geographical pigeonpea growing states of India viz., Andhra Pradesh, Bihar, Karnataka, Madhya Pradesh, Maharashtra, Tamil Nadu, Uttar Pradesh and West Bengal. The 33 Fusarium udum isolates were subjected to AFLP marker for accessing the genetic variability existing among the isolates. The isolates were grouped into four clusters. Among them, cluster II was the largest group with 18 isolates, followed by cluster I comprises of eight isolates. Cluster III had four isolates and cluster IV comprised three isolates. The highest population density of F. udum (236.30 cfu/g of soil) was recorded at soil depth of 0-10 cm. Incubation of F. udum infested soil samples from one to ten months revealed that temperature range 25 to 30 0C at 75 per cent water holding capacity was favourable for growth and multiplication of F. udum. Thirty nine pigeonpea IVT and AVT genotypes, 15 genotypes of multilocation trial and 50 promising genotypes evaluated for their performance against Fusarium wilt. Out of which nine, four and 34 genotypes showed resistant reaction respectively. Leaves, stems and roots of pigeonpea resistant variety ICP 8863 had highest total sugar and phenol content compared to moderately resistant variety BDN 2010. Carbendazim seed treatment @ 2g/Kg of seed + T. viride soil application @ 2.5 kg /ha in FYM @ 50 kg / ha had recorded lowest wilt incidence of 13.20 per cent and highest yield of 748.70 kg/ha. Among the intercrops tested, pigeonpea intercropped with sorghum @1:2 recorded wilt incidence of 15.77 per cent and yield of 228.60 kg/ha. |
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Date |
2016-05-26T11:04:23Z
2016-05-26T11:04:23Z 2011-11-18 |
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Type |
Thesis
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Identifier |
Th-9907
http://krishikosh.egranth.ac.in/handle/1/66335 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences, Bengaluru
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