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http://krishi.icar.gov.in/jspui/handle/123456789/24200| Title: | GENETIC VARIABILITY AND ASSOCIATION OF COMPONENT CHARACTERS FOR FRUIT YIELD IN PAPAYA (Carica papaya L.) |
| Other Titles: | Not Available |
| Authors: | B. R. Jana, Mathura Rai, Bikash Das and Vishal Nath |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR::Research Complex for Eastern Region, Patna |
| Published/ Complete Date: | 2005-01-01 |
| Project Code: | Not Available |
| Keywords: | PAPAYA |
| Publisher: | The Orissa Journal of Horticulture |
| Citation: | Not Available |
| Series/Report no.: | Not Available; |
| Abstract/Description: | Genetic variability and character association studies was carried out in 44 genotypes. Wide range of variability was observed in yield (1.46 to 17.50 kg/plant). number of nodes to first flower (29.66 to 76.66). lea/length (31.00 to 53.66 cm), plant height (81.66 to 191.0cm). east-west spread (126.6 to 206.66).fruit length (12.36to21.56 cm) fruit width (8.33 to 16.30 cm). number of fruits/plant (2.66 to 19.33) and Iola/ sugar (6.20 lo 12.8). The co-efficient of variation ranged from 8. 78 to 27.99 in pulp thickness and acidity respectively. High heritability of 94.8% was found in character number of fruits per plant. A II phenotypic coefficient of variation was higher than that of genotypic coefficient of variation. The yield was significantly correlated with fruit length(O. 47 5). /1 can be concluded on the basis of path analysis in the present investigation that the character like total sugar content, fruit width and number of fruits per plant has high positive direct effect on yield/plan/ al genotypic level which suggests the significance of these characters while selection in papaya breeding programme. Meanfniit weight showed negative direct effect on yield of papaya/plant which clearly indicated that number of fruits per plant is more import an/ rather than individual fruit weigh/. |
| Description: | The papaya (Carica papaya L.) is one of the most important fruit crops grown in India in which improvement has been achieved through breeding and selection. In Papaya, yield is the most important character for selection and breeding of desirable types. Being a highly ross pollinated crop, wide range of variation in quantitative characters provides the basis for selection in any fruit traits which facilitates the choice of suitable parents in the crop improvement programme. Correlations are helpful in determining the components of complex traits like yield which is dependent on several component characters (Decenta and Garcia, 1992). This type of analysis only provides information in the relationship and sometimes information obtained is misleading with respect to the identification of yield components. In perennial fruit crops like papaya, the heterozygous nature of the plant is a moderate factor in the breeding programme. In order to undrstand causal fac-tors of the correlation among traits: the estimate of the direct and indirect effect computed through path analysis to determine direct and indirect contribution to various • characters towards yield are very useful. Reports on correlation among different characters and information on direct and indirect effect of different character on papaya is very meager. Therefore, present study of relationship between yield, direct and indirect effect was proposed with the aim of gathering information which could fruitful for further papaya improvement programme. |
| ISSN: | Not Available |
| Type(s) of content: | Research Paper |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | The Orissa Journal of Horticulture |
| Volume No.: | 33(1) |
| Page Number: | 90-95 |
| Name of the Division/Regional Station: | Horticulture and Agro Forestry Researh Programme ICAR Research Complex for Eastern Region Plandu, Ranchi - 8340 I 0 (Jharkhand) |
| Source, DOI or any other URL: | Not Available |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/24200 |
| Appears in Collections: | NRM-RCER-Publication |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| GeneticPapaya.pdf | 2.94 MB | Adobe PDF | View/Open |
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