Variability of the Traits of Cones and Seeds in Different Larch Clones I. The Influence of the Provenance
AbstractPhenotypic variability of the cones and seeds was studied on seven larch clones that were obtained through grafting from plus trees, selected from natural and artificial populations from Romania. Also, correlations between several characteristics such as cones weight (g), cone length and width (cm), seed weight (mg), seed length and width (mm) were studied. A wide variation was observed for the weight of cones, ranged between 1.97-4.93 g, the average for all clones being 3.50 g. The coefficient of variability for cones weight oscillated, depending on the provenance, from 11.1% to 21.2%. Seeds weight varied between 54.4-74.4 mg, with a mean value of 61.9 mg. The weight of cones was positive correlated with all traits, except width of cones and seeds length. Weight of seeds was strong correlated with all traits, the biggest value of the coefficient of correlation being registered with the weight of cones (0.835). A very strong correlation (+0.939) was registered between the germination energy and germination capacity of seeds, but germination of seeds was negative linked with all traits of cones and seeds, not statistically correlated. The heritability in broad sense had high values, comprised between 0.943 (width of cones) and 0.993 (weight of cones). The results had illustrated that the peculiarities of the cones and seeds have a strong genetic determinism, influenced especially by the genotype and in a relatively small extent by the environment.
Authors who publish with this journal agree to the following terms:
a) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
b) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
c) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).