Genetic analysis of yield and quality attributes in fodder cowpea (Vigna unguiculata (L.) Walp) (Record no. 27113)
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| 000 -LEADER | |
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| fixed length control field | 04306nam a2200181Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20220926145100.0 |
| 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 | RAD/GE |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Radhika V S |
| 245 ## - TITLE STATEMENT | |
| Title | Genetic analysis of yield and quality attributes in fodder cowpea (Vigna unguiculata (L.) Walp) |
| 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. | 2003 |
| 502 ## - DISSERTATION NOTE | |
| Degree type | PhD |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | An experiment on "Genetic analysis of yield and quality attributes in fodder cowpea [Vigna unguiculata (L.) Walp.]" was carried out at the Department of Plant Breeding anti Genetics, College of Agriculture, Vellayani during 1999-2002 with the objective of estimating combining ability heterosis and gene action. Fifty one diverse genotypes were evaluated for yield and quality attributes. Each genotype was replicated twice. The observations on plant height, number of primary branches per plant, number of leaves per plant, total , . leaf area, days to 50 per. cent flowering, days to maturity, leaf/stem ratio, leaf area index, dry weight of leaf, dry weight of stem, green fodder yield, dry matter yield, crude protein content, crude fibre content, calcium content and phosphorus content were recorded. Variability studies indicated high GCV and pev for dry weight of stem, dry matter yield and green fodder yield. High estimates of heritability (>70 per cent) were recorded for all the characters except number of primary branches per plant. High heritability and genetic advance were observed for dry weight of stem, dry weight of leaf, green fodder yield, dry matter yield, leaf area index and crude fibre content. Leaf/stem ratio, leaf area index, dry weight of stem, dry weight of leaf, plant height and number of primary branches per plant showed positive significant correlation with both green fodder yield and dry matter yield. A discriminant function was fitted with 12 variables to derive a selection index for 51 accessions based on their yield and yield attributes. The top ranking seven accessions, IFC 95102, IFC 8401, UP 9001, EC 4216, EC 240744, EC 241027 and HES 82 were selected as lines (female parents) for hybridization. Another discriminant function was fitted to derive a selection index to evaluate the quality parameters viz., crude protein content and crude fibre content. Three top ranking accessions not selected as lines were selected as testers (EC 241044, N 311 and UPC 953). Combining ability analysis showed that the lines IFC 8401 and IFC 95102 were good general combiners for green fodder yield and the line IFC 8401 was a good general combiner for dry matter yield. Among the twenty one hybrid combinations, significant sea variance was observed in the hybrids IFC 95102 x EC 241044, RES 82 x EC 241044, EC 2416 x UPC 953 and EC 241027 x UPC 953 for green fodder yield and dry matter yield. The hybrid RES 82 x EC 241044 exhibited high sea significance for plant height, number of leaves per plant, total leaf area, leaf area index, dry weight of leaf, dry weight of stem, crude protein content, calcium content and phosphorus content and significant negative significance for days to maturity. The hybrid EC 241027 x UPC 953 also exhibited superior values for most of the characters. Of the twenty one hybrids, five combinations viz. IFC 95102 x EC 241044, RES 82 x EC 241044, IFC 8401 x EC 241044, EC 241027 x UPC 953 and IFC 95102 x N 311 excel others by exhibiting positively significant heterosis for most of the characters including green fodder yield and dry matter yield. These five hybrids were used for studying in vitro dry matter digestibility and the percentage IVDMD was between 56 and 70. In the F 2 population the mean and variance were estimated and here also the hybrid HES 82 x EC 241044' gave superior mean values for all characters studied . . The hybrids RES 82 x EC 241044 and EC 241027 x UPC 953 were identified as the promising hybrids and they can be carried forward to develop fodder varieties with high yield and quality. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Suma Bai D I (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://krishikosh.egranth.ac.in/handle/1/5810015011 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2014-03-18 | 630.28 RAD/GE | 172172 | 2014-03-18 | 2014-03-18 | Theses |