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N. Gilbert (1967)
Additive combining abilities fitted to plant breeding data.Biometrics, 23 1
(1974)
Var ia t ion in Hevea b r a s i l i e n s i s . I . Yield and g i r th data of the 1937 hand pol l inated s eed l i ngs
(1975)
Clonal c h a r a c t e r s de t e r mi n i ng the yie ld of Hevea b r a s i l i e n s i s
P r o g r e s s of b reed ing inves t iga t ions with Hevea b r a s i l i e n s i s . III . F u r t h e r data on the c r o s s e s made in the ye a r s 19371941
(1937)
Studies in plant b reed ing technique II . The design of field t e s t s of plant b reed ing m a t e r i a l
(1975)
Combining abi l i ty ana lyses of c e r t a i n c h a r a c t e r s of young Hevea s eedl i ngs
H. Tan, T. Mukherjee, S. Subramaniam (2004)
Estimates of genetic parameters of certain characters in Hevea brasiliensisTheoretical and Applied Genetics, 46
(1965)
The se lec t ion of the RRIM 600 s e r i e s c lones
Amendmen t s and addit ion to the i n t e r n a - t ional tapping nota t ion
Genet ica l bases of plant b reed ing
G. Milliken, H. Bush, Alvin Ericksen, A. Suzuki (1970)
Estimating general combining ability from an incomplete crossing system.Journal of Sugarbeet Research, 16
122 50 50 1 1 H. Tan Plant Science Division Rubber Research Institute of Malaysia Kuala Lumpur Malaysia Summary Estimates of general combining ability of parents for yield and girth obtained separately from seedlings and their corresponding clonal families in Phases II and IIIA of the RRIM breeding programme are compared. A highly significant positive correlation (r = 0.71***) is found between GCA estimates from seedling and clonal families for yield in Phase IIIA, but not in Phase II (r = −0.03 NS ) nor for girth (r= −0.27 NS ) in Phase IIIA. The correlations for Phase II yield and Phase IIIA girth, however, improve when the GCA estimates based on small sample size or reversed rankings are excluded. When the best selections (based on present clonal and seedling information) are compared, all five of the parents top-ranking for yield are common in Phase IIIA but only two parents are common for yield and girth in Phases II and IIIA respectively. However, only one parent for yield in Phase II and two parents for girth in Phase IIIA would, if selected on clonal performance, have been omitted from the top ranking selections made by previous workers using seedling information. These findings, therefore, justify the choice of parents based on GCA estimates for yield obtained from seedling performance. Similar justification cannot be offered for girth, for which analysis is confounded by uninterpretable site and seasonal effects.
TAG Theoretical and Applied Genetics – Springer Journals
Published: Jan 1, 1977
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