Your browser doesn't support javascript.
loading
Age-age correlation for early selection of rubber tree genotypes in São Paulo State, Brazil
Gonçalves, Paulo de Souza; Bortoletto, Nelson; Cardinal, Átila Bento Beleti; Gouvêa, Lígia Regina Lima; Costa, Reginaldo Brito da; Moraes, Mário Luiz Teixeira de.
  • Gonçalves, Paulo de Souza; Instituto Agronômico de Campinas. Programa Seringueira. Campinas. BR
  • Bortoletto, Nelson; APTA Regional Noroeste Paulista. Votuporanga. BR
  • Cardinal, Átila Bento Beleti; Instituto Agronômico de Campinas. Campinas. BR
  • Gouvêa, Lígia Regina Lima; Instituto Agronômico de Campinas. Campinas. BR
  • Costa, Reginaldo Brito da; UCDB Programa de Desenvolvimento Local. Campo Grande. BR
  • Moraes, Mário Luiz Teixeira de; Universidade Estadual Paulista 'Júlio de Mesquita Filho'. São Paulo. BR
Genet. mol. biol ; 28(4): 758-764, Dec. 2005. ilus, tab
Article in English | LILACS | ID: lil-451000
ABSTRACT
In a field trial involving 68 rubber tree (Hevea spp.) clones calculation of genotypic correlation coefficients revealed significant age-age correlation from age 1 to 6 (immature period) for girth A and for age 7 to 12 (mature period) for girth B and for age 7 to 12 (production of latex) for yield. Rank correlation coefficients between all immature ages of girth (girth A), all ages of mature girth (girth B) and all annual rubber production (yield) were significant for the three traits, with the coefficients decreasing with increasing age. Selection of the sets of best 30, 15, 10 and 5 clones from the available 68 clones at a given age was generally accompanied by a descending order of percentage success. It was suggested (a) to have the best 30 clones of age 6, select the set of best 36 clones at age 2, (b) to have the best 15 clones of age 6, select the set of best 20 clones at age 3, (c) to have the best 5 clones of age 6, select the set of best 8 clones at age 4, and (d) to have the best 3 clones of age 6, select the set of best 3 clones at age 5. More than 80% of the targeted clones on girth A or girth B basis and more than 76.7% clones on yield basis were found to get selected at steps (a) through (d). For achieving early multiplication of the most productive clone for deployment, multiplication should be started with the best 36 (i.e. 60%) clones selected at age 2.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Clone Cells / Hevea Country/Region as subject: South America / Brazil Language: English Journal: Genet. mol. biol Journal subject: Genetics Year: 2005 Type: Article Affiliation country: Brazil Institution/Affiliation country: APTA Regional Noroeste Paulista/BR / Instituto Agronômico de Campinas/BR / UCDB Programa de Desenvolvimento Local/BR / Universidade Estadual Paulista 'Júlio de Mesquita Filho'/BR

Similar

MEDLINE

...
LILACS

LIS

Full text: Available Index: LILACS (Americas) Main subject: Clone Cells / Hevea Country/Region as subject: South America / Brazil Language: English Journal: Genet. mol. biol Journal subject: Genetics Year: 2005 Type: Article Affiliation country: Brazil Institution/Affiliation country: APTA Regional Noroeste Paulista/BR / Instituto Agronômico de Campinas/BR / UCDB Programa de Desenvolvimento Local/BR / Universidade Estadual Paulista 'Júlio de Mesquita Filho'/BR