Evaluation of Vegetable Cowpea (Vigna unguiculata subsp. sesquipedalis (L.) Verdcourt) For Legume Pod Borer, Maruca vitrata(Fab) Resistance and Yield (Record no. 26566)
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| 000 -LEADER | |
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| fixed length control field | 04328nam a2200181Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20220827120127.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 140128s9999 xx 000 0 und d |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 630.28 |
| Item number | POU/EV |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Pournami Panicker R |
| 245 ## - TITLE STATEMENT | |
| Title | Evaluation of Vegetable Cowpea (Vigna unguiculata subsp. sesquipedalis (L.) Verdcourt) For Legume Pod Borer, Maruca vitrata(Fab) Resistance and Yield |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc. | Vellayani |
| Name of publisher, distributor, etc. | Department of Plant Breeding and Genetics, College of Agriculture |
| Date of publication, distribution, etc. | 2000 |
| 502 ## - DISSERTATION NOTE | |
| Degree type | MSc |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | The present study aimed at screening vegetable cowpea germplasm for legume pod borer resistance and evaluation of partially resistant cultivars thus identified for yield was carried out at the Department of Plant Breeding and Genetics, College of Agriculture, Vellayani. Data for the investigation were collected from two field experiments conducted during the period 1997-1999. In the field screening programme for legume pod borer resistance, 51 diverse cultivars were evaluated on the basis of overall plant resistance index (Ipr) computed using a combination of flower, pod and seed damage measurements. The damage parameters employed in the computation of lpr were number of larvae in 25 flowers, percentage pod infestation and seed damage index (Jackai, 1982). Significant differences between cultivars were observed for these damage parameters as well as the resistance index computed based on them. Differences among cultivars in the severity of pod damage assessed as number of entry / exit holes on pod samples were also significant. The cultivar suffering least flower damage was Vs 27. The cultivars Vs 2 and 28 recorded the lowest percentage pod infestation as well as pod damage severity. Cultivar with the lowest seed damage was Vs 13. Lower Ipr values indicate higher levels of plant resistance. Consequently Vs 27 with the lowest Ipr value was identified as the most resistant among the 51 cultivars. Other cultivars on par with Vs 27 were Vs 2, Vs 7, Vs 8, Vs 10, Vs 19, Vs 28, ys 31 andVs35. Correlation analysis of different damage parameters did not suggest any relationship between flower and seed damages. Percentage pod infestation and pod damage severity showed highly significant positive correlation between . them but were uncorrelated with larval count in flowers. Seed damage was found to be positively correlated with pod damage. Despite differences in total leaf chlorophyll content among the cultivars, the correlation between total leaf chlorophyll content and plant resistance index was non-significant indicating the absence of any relationship between them. Similarly peduncle length did not show any relationship with Ipr as well as the different damage parameters. However, pod width was found to be positively correlated with Ipr, pod damage severity and percentage pod infestation. Non-glandular trichome density on pods recorded significant negative correlation with Ipr and pod damage indicating that plant resistance increases with increase in non-glandular trichome density on pods. Fifteen top ranking cultivars with respect to legume pod borer resistance were chosen and evaluated for yield and its components in a field experiment in RBD with three replications. Analysis of variances revealed significant difference among the varieties for eleven out of the fourteen characters studied. The cultivar Vs 14 was the top yielder of vegetable pods with Vs 24 on par with it. Highest pod length was recorded by Vs 28 and highest pod weight by Vs 2. High heritability and genetic advance were recorded for number of pods per plant, yield of vegetable pods per plant and pod weight. Number of pods per plant had high direct effect on vegetable pod yield. Its correlation with yield was significant and positive. This suggested that number of pods per plant is a character important in selection programmes for yield in vegetable cowpea. The cultivars Vs 14 and Vs 24 which were high yielders among the partially resistant accessions were identified as varieties suitable for cultivation in legume pod borer endemic areas. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sunny Oommen K (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://krishikosh.egranth.ac.in/handle/1/5810104070 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Koha item type | Theses |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
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| KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2014-03-18 | 630.28 POU/EV | 171623 | 2014-03-18 | 2014-03-18 | Theses |