National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An experiment was conducted to find out Physico-chemical characterization of lodging tolerance in rice (Oryza sativa) stem for lodging tolerance at reproductive phase by studying relevant parameters in three different groups of rice germplasm viz., stable strong culm mutant lines (SP-351, SP-353, SP-360 and SP-70) ; lodging tolerant varieties (MTU-1112, MTU-1121, MTU-1166 and MTU-1001) and lodging susceptible varieties (Swarna, BPT-5204, Tellahamsa and RNR-15048) The current study showed that the mutant lines showed greater culm diameter, linear density and physical strength, they were lodging tolerant (higher physical strength values), probably due to the mutagenic reasons. Lodging tolerant varieties in general have higher culm diameter, linear density and physical strength compared to lodging susceptible varieties. The chemical components of rice culm also effect the lodging tolerance nature of rice. Current study showed that the mutant lines showed that greater total potassium and total silicon content they were lodging tolerant and lodging tolerant varieties have higher total potassium and silicon content compared to lodging susceptible varieties. However culm diameter and linear density to be having significant role in lodging nature of rice, which was an evident from the correlation studies between physical parameters and physical strength of culms. It can be concluded that lodging nature of the rice can be measured by taking any or all of the above said parameters. Out of all parameters linear density of the culm, outer diameter of the basal internode appear to be best indices of physical strength of rice culms also total potassium content and total silicon content in other words lodging nature of rice.
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