Cecília Khusala Verardi

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Rubber production in the rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.] can be expressed differently in different environments. Thus the objective of the present study was to select productive progenies, stable and responsive in time and among locations. Thirty progenies were assessed by early yield tests at three ages and in three(More)
Knowledge of the traits present in plant populations of a species is essential to carry out selection and breeding. The objective of the present study was to estimate the genetic parameters and correlate genetically and phenotypically the variables rubber yield, annual trunk girth increase, number of latex vessel rings and bark thickness in early(More)
Rubber tree breeding programs are mainly driven by selection of individuals with high yield and quality of rubber. Data from 51 open-pollinated progenies tested on six sites in Brazil were analyzed over several traits to estimate the following: genetic parameters such as narrow-sense heritability and additive genetic variance in single- and multi-site(More)
Vigor is important in rubber tree cropping because of its association with early latex exploitation, resistance to wind breakage and wood production. The objective of the present study was to assess the vigor stability of 25 rubber tree genotypes in the pre- and post-tapping phases using different methods. A randomized block design was used with three(More)
The present study aimed to estimate genetic parameters in order to assess heritability, predict genetic gains, and establish genetic and phenotypic correlations among yield-related traits of 22 families of Hevea brasiliensis (Willd. ex. Adr. de Juss.) Muell-Arg, selected phenotypically for yield. Three early measurements were carried out for the traits dry(More)
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