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http://krishi.icar.gov.in/jspui/handle/123456789/53661
Title: | Evaluation of coconut germplasm for fruit component traits and oil yield. |
Other Titles: | Not Available |
Authors: | Niral V, Nair RV, Jerard BA, Samsudeen K, Ratnambal MJ |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Central Plantation Crops Research Institute |
Published/ Complete Date: | 2009-09-01 |
Project Code: | 1000761028 |
Keywords: | Coconut, Cocos nucifera L., germplasm, fruit component traits, oil yield, correlation coefficient |
Publisher: | Indian Society of Oilseeds Research |
Citation: | Niral V, Nair RV, Jerard BA, Samsudeen K, Ratnambal MJ (2009) Evaluation of coconut germplasm for fruit component traits and oil yield. J Oilseeds Res 26:668-670 |
Series/Report no.: | Not Available; |
Abstract/Description: | Work on evaluation of coconut germ plasm and hybrids to identify superior lines are in progress at the Central Plantation Crops Research Institute. The present study was undertaken to determine the variability for fruit componenttraits in the conserved coconut germ plasm available at the Central Plantation Crops Research Institute and to determine the association between these traits. A total of 71 coconut accessions, including 58 tall accessions and 13 dwarf accessions were studied for 12 fruit component traits [weight of fruit (g), thickness of husk (em), weight of nut (g), husk wt. (g/nut), percentage of husk, thickness of kernel (em), weight of kernel (g/nut), thickness of shell (em), weight of shell (g/nut), copra content (g/nut), oil percentage, oil content (g/nut)] and two related parameters viz., oil and copra yield/ha. The fruit component analysis indicated wide variability among the coconut accessions for most of the traits studied. The highest CV values were observed for copra yield/ha, oil yield/hectare and weight of nut, respectively. Only oil content in the copra showed a very low C.V of 3.18%, indicating lesser variability for this trait among the accessions studied and also suggesting that oil yield/ha is more influenced by endosperm/copra yield and not by oil percentage per se. Another trait with comparatively lesser CV value was thickness of kernel again indicating that variation in copra/endosperm weight is less influenced by the thickness of the endosperm and is rather determined by the size of the nut. The copra content per nut ranged from 349g in the case of SNRT to 70.40g in the case of SUBD. In general, low copra and oil content was recorded in the dwarf accessions. On the other hand, the large-fruited accessions SNRT, MLT and MVT yielded more than 200ml of oil/nut. The copra and oil yield/ha among the accessions ranged from 0.6-4.46t1haand 0.4-2.94 tlha, respectively. The most inferior accessions were SUBD and the New Caledonian accession NUFT, while the most superior accessions producing more than 4t copra/ha and more than 2.6t oil/ha were FJLT, ADRT, JVT, PHOT and AGT, respectively. The correlation coefficients for the fruit component traits indicated highly significant positive correlation of fruit weight with weight of all the component traits, viz., husk, shell, kernel, copra and oil content per fruit. The thickness of the husk did not show any significant correlation with any of the fruit component traits. On the other hand, the percentage of husk showed significant negative correlation with nut weight kernel weight and copra weight, indicating the need to select accessions with lesser husk percentage while breeding for higher endosperm/oil yield. Copra yield/ha and oil yield/ha showed highly significant positive correlation among themselves, indicating that these are not influenced by the fruit component traits alone and the influence ofannual nut yield on these two traits. Therefore, the fruit weight, husk percentage and nut yield appear to be the most important characters influencing coconut oil output per hectare and hence it is possible to improve coconut oil productivity in the coconut plantations by selection of superior accessions based on these traits. |
Description: | Not Available |
ISSN: | 0970-2776 |
Type(s) of content: | Journal |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Journal of Oilseeds Research |
NAAS Rating: | 4.59 |
Volume No.: | 26 |
Page Number: | 668-670 |
Name of the Division/Regional Station: | CROP IMPROVEMENT |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/53661 |
Appears in Collections: | HS-CPCRI-Publication |
Files in This Item:
File | Description | Size | Format | |
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NIRAL ET AL FCA OIL JOSR 2009.pdf | 285.84 kB | Adobe PDF | View/Open |
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