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Assessment of yield adaptation of rubber tree (Hevea brasiliensis) clones through pattern analysis (Record no. 54559)

MARC details
000 -LEADER
fixed length control field	02122nam a2200157Ia 4500
100 ## - MAIN ENTRY--AUTHOR NAME
Personal name	Priyadarshan P M
245 #0 - TITLE STATEMENT
Title	Assessment of yield adaptation of rubber tree (Hevea brasiliensis) clones through pattern analysis
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Name of publisher	Proceedings of the 15th Plantation Crops Symposium, PLACROSYM XV, 10-13 December 2002, Mysore .pp.32-36.
520 ## - SUMMARY, ETC.
Summary, etc	Yield adaptation was assessed in twelve rubber clones evolved in India (RRII 105, RRII 118, and RRII 208), Malaysia (RRIM 600, PB5/51, PB 86, GI 1) Indonesia (PR 107, GT 1) and China (SCATC 88/13, SCATC 93/114, Haiken 1). The yield data of sub optimal and optimal environments were seperated into four enviroments of two successive years (1999-2001). GE biplot was made to assess adaptability of clones to the environments. The largest positive value was seen for RRII 208, indicating RRII 208 performs well across environments. All the other extreme is RRII 105 that extended to the negative side of vector A. When all clones are considered together, the order of interaction from most positive to most negative are RRII 208, SCATC 93/114, PB 86, RRIM 600, PR 107, RRII 118, GT 1, PB 5.51, HAIKEN 1, SCATC 88/13, GI 1 and RRII 105. The genotypes are well spread through the diagram and hence no obvious grouping of the clones is evident. To excercise selection based on both stability and yield, the PCA 1 values were plotted against individual genotype means. PB 86 had a genotypic mean which was greater than the general mean (31.49 g tree -1, tap -1) and the PCA value is almost zero, thereby indicating that PB 86 is stable over all environments. The clones exhibited same trend of stability when PCA 1 values were depicted against environment means. RRII 118, RRII 208, RRIM 600, PB 5/51, SCATC 88/13 and SCATC 93/114 were seen to interact positively with varied environments since their position were above zero value when depicted against both genotype and environment means.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Hevea brasiliensis
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Pattern analysis
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Yield adaptation
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Nair R B
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	Journals

Holdings
Withdrawn status	Lost status	Damaged status	Not for loan	Home library	Current library	Shelving location	Date acquired	Koha item type
			Journals	RRII Library	RRII Library	Botany	16/12/2002	Journals