International Journal of Chemical Studies
Vol. 5, Issue 6 (2017)
Evaluation of ragi genotypes on growth parameters and physiological attributes under kharif rainfed conditions
Author(s): K Aparna and Zuby Gohar Ansari
Abstract: Millets are major food and feed sources in the developing world especially in the semiarid tropical regions of Africa and Asia. The work was conducted with the purpose to evaluate the growth parameters and physiological attributes under kharif rainfed conditions in ten ragi genotypes among them seven are pre release genotypes (PPR-1012, PPR-2885, PPR-2773, BR-36, PPR-1040, PPR-1044, PR-10-30) and remaining three are released genotypes (Sri chaitanya, Vakula and Hima). The experiment was conducted in factorial randomized block design with three replications. During the experiment a long dry spell for 20 days occurred i.e. from 47 DAS to 67 DAS, which has coincided with panicle initiation and flowering stages. Plant height showed sigmoid growth curve trend and the increase was exponential from 30DAS to 60DAS, there after it has increased with decreasing trend when compared to other growth parameters. The process of growth is dependent upon cell division and cell expansion which takes place under adequate moisture conditions. Hence plant growth and development is highly variable with genotype x environment interaction. In this experiment, a significant difference was observed from 60 DAS to 90 DAS in plant height, leaf area, total dry matter, leaf dry weight, stem dry weight and only in root dry weight no significant differences between genotypes. Physiological attributes like leaf area index (LAI) significant differences were not observed between genotypes is an important plant factor in determining the dry matter accumulation and hence the crop yield, and leaf area duration (LAD) Significant differences were observed between genotypes throughout the duration, however such differences between treatments were observed only 45-60 DAS onwards. Hence these genotypes can perform better under moisture stress conditions and are suitable for rainfed situations. The present study reveals that there is sufficient genotypic variability among ragi genotypes for growth parameters and physiological attributes. The overall performance of these genotypes BR-36, PPR-1012 and PPR-2773 was the best among the ten genotypes tested and confirms its suitable for rainfed conditions.
Pages: 1899-1901 | 455 Views 9 Downloads
How to cite this article:
K Aparna, Zuby Gohar Ansari. Evaluation of ragi genotypes on growth parameters and physiological attributes under kharif rainfed conditions. Int J Chem Stud 2017;5(6):1899-1901.