Physical characteristics and nutritional quality of salt tolerant rice genotypes

Abstract

Rice is recently introduced in Ethiopia, rice production is expanding very fast. However, the grain quality of the high yielding varieties in the country is not well characterized. The present study was carried out to evaluate some important physical characteristics and nutritional qualities of 15 rice genotypes. The experiment was conducted at Bahirdar University food and nutrition laboratory from July to August, 2015. AT 401, IR 66946 and IR 73055 had significantly the longest kernel. Most of the genotypes had bold type of appearance which is a good physical characteristic. The 1000 kernel weight was good in most of the genotypes except for IR 72048 and IR 72593. IR 55179, IR 59418 and IR 71810 had the highest bulk density and were round shaped. The chalkiness was minimum in genotypes IR 70023 (5.63%), IR 71991 (11.27%) and IR 72048 (11.91%). The protein and fiber content was higher in AT 401, IR 70023 and IR 71901. IR 29 was superior in fat content. The correlation between the physical and nutritional characteristics was very minimum which indicates the independency of the two. Although the nutritional and physical characters are within the acceptable range, there would be a chance for improvement of both quality since it contributes through selection and crossing.

Evaluation of grain quality traits in popular rice varieties of Andhra Pradesh

“…A study on aromatic fine grain rice by Mia et al (2012) [34] indicated that the increase in grain weight occurs with increased kernel length, supporting the present study. Similarly, kernel length KL has a positive relation with kernel breadth (r = 0.653) and L/B ratio (r = 0.552), which means 1000 kernel weight of rice varieties has a strong positive association with kernel length and breadth, which means that the more refined the grain weight, slender and more elongate the grain as reported by Girma et al, 2016 [ 20] . HRR showed a non-significant, negative association with grain L/B ratio.…”

Untitled

“…In Ethiopia particularly in Amibara district soil salinity is the major factor for crop production [4][5][6]. Several physiological pathways have been observed to be affected by high salinity [7], at different growth stages [8,9]. Moreover, the interactions between salinity and mineral nutrition of plants are complex [10] and this negative interaction may decrease growth and consequently nutrient use efficiency [11].…”