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Second cycle reciprocal recurrent selection in oil palm , Elaeis guineensis Jacq . Results of Deli x La Mé hybrid tests Second cycle de sélection récurrente réciproque chez le palmier à huile Elaeis guineensis Jacq
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2010 |
| Abstract | A second oil palm breeding cycle was undertaken with selfs and within-group crosses carned out w1th parents selected durmg the first RRS cycle. Progeny tests have been set up at 5 sites m Africa, Latin America and Southeast Asia, involvmg around 1,300 D x P/D x T/T x D crosses spread over 60 trials. Partial results have already been published and an 1mt1al overv1ew 1s given here for 950 crosses planted in 39 tnals. The dura parents of these crosses were chosen from selfs or crosses produced usmg 9 Deil dura parents and the teneralpis1fera parents carne from selfs or crosses carned out wtth 4 tenera of La Mé origm. The oil production charactenst1cs are analysed according to parental ongin and the planting site, w1th a view to using the data for seed production. The production differences between groups compnsing crosses whose D parents are sibs, along with the T/P parents, are markedly smaller than the d1fferences between crosses within the groups. Between-cross vanability w1thin the groups is largely the same whether the parents be long to selfs or to crosses. There are considerable difference~ between sites, though no marked genotype X environment mteraction LS ~een : the classification of matenal common to several sites remams the same at each site. The progress made compared to the f1rst cycle stems more from an improved oil/bunch rate than from improved bunch production and this results ma roughly 15-18% mcrease in 01! production. This improvement in production is combined with vertical growth, selection pressure, so as to maintarn moderate vertical growth, which is characteristic of Deli x La Mé material Fmally, all the crosses are being tested for thelf performance with respect to Fusanum w1lt, to identtfy the most suitable parents for use m a spec1f1c programme to produce tolerant material. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://agritrop.cirad.fr/395610/1/ID395610.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
