Evaluation of the effect of genealogical selection on agronomic characteristics in a Basmati rice cultivar (Oryza sativa L.) Evaluation of the effect of genealogical selection on agronomic characteristics in a Basmati rice cultivar (Oryza sativa L.)

Abstract

ABSTRACT

The adoption of new culinary styles from other countries has led to an increase in the national demand for special rices, where the particularly aromatic rice such as Basmati which has a distinctive aroma and flavor, and after cooking, its rice grains are longer
and thinner than those of table rice Its price in the international market is at least 1100 USDt-1, while the price of Venezuelan table rice is 450 USDt-1. But these have little adaptation to tropical conditions, as well as the difficulty that genetic improvement
programs have presented to obtain high-yield varieties in the field, with grain quality attributes similar or superior to traditional aromatic varieties on the international market. Given this fact, for some years now, the Danac Foundation has carried out genetic
improvement activities to obtain aromatic rices through the evaluation of introduced germplasm, genealogical selection and crossbreedings. Considering the above, the objective of this study was to evaluate the effect of genealogical selection on a genetically variable population of aromatic of Basmati type rice (Oryza sativa L.). For this purpose, a trial was established in
the experimental field with 162 plots in a randomized block design with three replications, where agronomic characteristics, yield components, grain quality and sensory quality were evaluated by aroma analysis. The selection generated improvements in yield reaching 4 500 kg.ha-1, height conservation greater than 90 cm and cycle duration 100 days, both characteristics with
a desirable intermediate classification, a typification of aroma similar to popcorn and desirable intensity for the production of this type of rice according to the Department of Agriculture of India, complying with the sensory quality standard required to meet
the characteristics of Basmati type rice.