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2 Forum messages

• Material of hybrid poplar clones for TB Partner 15

  4 February 2009 14:37, by Alfas Pliura

  Dear TREEBREEDEX colleagues,

  We are initiating national project on clonal testing of poplar hybrids, which is due to resent raising of interest in short rotation forest plantations among Lithuanian forest and agricultural land owners. For the 30 years we had and still have breeding activities on hybrid aspen, which includes crossing among Populus tremula, P.tremuloides and P.alba, establishing progeny trials, vegetative propagation (in vitro and root cuttings), clonal testing and selection of clones. However, there are no breeding activities, no collections, no clonal trials on POPLAR HYBRIDS (e.g. P.deltoides x P. nigra, P.trichocarpa x P.deltoides, P.maximowiczii x P.balsamifera, etc.). We are interested in including such a material in our clonal trials of hybrid aspen to compare its performance in our environmental conditions of hemiboreal forest zone.

  Would it be possible that TREEBREEDEX partners who have collections of Poplar hybrids would provide us with some clonal material to facilitate the establishment of clonal trials of poplar hybrids in Lithuania. We would very appreciate if some 20-30 cuttings of each clone could be sent by mid-May 2009 to us on address given below.

  Looking forward to meeting you in coming TREEBREEDEX meetings,

  Kind regards,

  Alfas

  TB partner No.15

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  Dr. Alfas Pliura, Department of Genetics and Tree Breeding, Lithuanian Forest Research Institute, Liepu 1, LT-53101 Girionys, Kaunas distr., Lithuania.

  Tel.: +370 37 547289 Fax: +370 37 547446 Mob.: +370 68 267811 E-mail: genetsk@mi.lt http://geocities.com/apliura2002/ http://www.forestgen.mi.lt/ForestgenEn.htm http://www.mi.lt/research.htm

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• statistical platform

  14 July 2009 03:07, by Leopoldo Sanchez

  First at all, thanks very much for the reactions mostly positive on the construction of a statistical platform. Whenever possible when replying try to do it through the Forum or TBX mailing list in order to get the amplest audience. It is important to spread the word. I’m still hoping to get more reactions. The plan is to collect as many reactions as possible among TBX members and outsiders as well. By September or early October we should have enough people from where to get a list of potential members for the steering committee. This should not be considered as definitive: new add-ons can be considered later on.

  There have been already some suggestions on the way the platform should be built up. Some people consider SAS as a good option. Many people already use it; it’s got many features for data warehousing and analyzing. In that case, the role of the community here would be a platform for the interchange of analytical protocols among users, and maybe to develop a “how to” book of recipes for breeders. Things lacking would be sophisticated mixed models for complex pedigrees. It’s commercial ware coming from a big name, which is not bad in itself, but constrains developments to just those of general interest.

  Other suggestions go to the use of Treeplan. I have not direct experience on this program, but it is a sophisticated BLUP machine managing large and complex datasets. On the down side, it is expensive, very expensive I have heard, and lacks other statistical functions. It’s not a general purpose package.

  It has also been suggested that the package DIOGENE could serve as inspiration for our project. This is a general purpose statistical package made for plant breeders and doing all kinds of analyses of variance, selection indexes, G by E, spatial analyses, etc. It’s lacking a BLUP machine. Philippe Baradat is DIOGENE’s developer.

  These are some of the suggestions so far. I’m keeping a record for all of them, which will help the steering committee later on in the search and identification of feasible solutions.

  So, please, react to this and bring to the open your opinions.

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