Some features of primary seed production of large-grained rice genotypes on the example of variety Anait

• Published in: IOP conference series. Earth and environmental science 2020-08, Vol.548 (7), p.72056
• Main Authors: Dzhamirze, R R, Ostapenko, N V, Garkusha, S V, Chinchenko, N N
• Format: Article
• Language: English
• Subjects: Agricultural production; Genotypes; Indicators; Plant communities; Rice; Seeds; Thickness; Weight
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/548/7/072056

The article presents the results of studying the characteristics of rice grain of variety Anait. It was previously noted that in this variety in the primary seed production nurseries there is a different quality of grain on the panicle and in the plant community. This can be explained by the different quality of technological indicators of grain and milled rice. The variety of grain quality of Anait is due to the interaction of its three forms: matrix (maternal), environmental and genetic. In the primary seed production nursery (P-1) of rice variety Anait, 25 families were analyzed. A biometric analysis of plants was made and important technological indicators of the quality of grain and milled rice were determined. Variability in the grain thickness was established, expressed by the variability of the mass of 1000 grains not only between families, but also within the family, on a panicle. Rice variety Anait is unique in that it has a very large grain, but the weight of 1000 grains can vary from 33.0 to 44.4 g. The weight of 1000 grains in it depends on the thickness of the grains. Family varieties were grouped into three classes according to the grain thickness: class I - with a thickness of 2.0-2.2 mm; II class - 1.9-2.0 mm and III class - families with high mobility of the trait, i.e. showing inconsistency in thickness over 2016-2018. The variability of the main technological quality traits of grain and milled rice by classes amounted to: I class - filminess - 0.3-5.7%, grain thickness - 0.7-2.0%, weight of 1000 grains - 2.1-3.8%; II class - 0.9-8.4%, 0.3-3.2% and 0.5-3.6%, respectively; III class - 8.2-9.3%, 5.5-7.3% and 6.2-10.4%, respectively. Specific correlation relationships in each class are established, which determine their peculiarity in the subsequent seed production.