Correlation studies on photosynthetic rates, girth and yield in Hevea brasiliensis (Record no. 56410)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01826nam a2200181Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Samsuddin Z |
| 245 #0 - TITLE STATEMENT | |
| Title | Correlation studies on photosynthetic rates, girth and yield in Hevea brasiliensis |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Journal of Natural Rubber Research |
| Year of publication | 1987 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 46-54 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | Correlation studies were carried out using photosynthetic rates (PR) of two-whorl buddings raised from budded stumps in a controlled growth chamber and yield and growth parameters of mature buddings from field trials. Positive correlations between PR and yield over five years (MY) were found. No correlations were, however, detected between PR and mature growth parameters i.e. girth at opening (GO), girth at fifth year of tapping (GC) and girth increment (GI). The correlations between MY and GI or GC were negative and significant. Among the growth prarameters, significant positive correlations were found between GO and GC, GC and GI but there was no correlation between GO and GI. Multiple regression studies of PR on MY, GO, GC or GI suggest that MY was the only dominant and significant variable accounting for 22;of the variation in PR. Growth parametersl do not appear to give significant positive predictive power for PR. When MY was used as the deependent variable, with GO, GC and GI as the independent variables, the coefficients of multiple determination (R2) varied from 0.31 to 0.57. PR showed some additional contribution (significant at P < 0.1) when considered together with growth parameters to account for MY. The significance of these results is discussed in relation to the usage of PR in early selection for yield in Hevea. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Girth |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Hevea brasiliensis |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Yield |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tan H |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Yoon P K |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | Botany | 17/12/2021 | Volume 2, Issue 1 | Journals |