Morphoagronomic evaluation of rice germplasm from different origin and varietal group
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Abstract
in the investigation because in this it is based varieties
differentiation and physiology and improvement studies. The
work was developed with the objective to make
morphoagronomic characterization varieties and to know the
variables that contribute to differentiate them and the
characteristics that could be important to select the parents of
the Plant Breeding Program with the purpose to get crop bigger
efficiency. Were evaluated 10 rice genotypes with different
origin and varietal group. The seeding was carried out in trays
and then it was transplanted in rows of 2.40 m of longitude.
Were carried out evaluations in two cultivation stages that
included quantitative and qualitative variables, also Standard
Evaluation System and Description Varietal Form was
methodologies used. Data obtained were processed by Main
Components and Cluster with MINITAB statistical program
and Pearson Correlations were determined. The results revealed
the existence of morphoagronomic differences in rice varieties
and correlations among the quantitative variables evaluated;
also were confirmed marked contrasts between Indicas and
japonicas types for most of the studied characters. Two
obtained components explained 69.3% of total variation. The
genotypes were contained in six groups or classes, almost all
the individuals with common varietal group concentrated to
exception of Nipponbare, Nerica-1 and Bluebonnet-50 that were
located in independent classes. Only there was similarity for
all the varieties in two of 12 qualitative characters evaluated.
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