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Influence of Nutrients and Nutrient Use Efficient Genotypes on Tuber and Leaf Cyanogen and Tuber Starch in Cassava

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Title Influence of Nutrients and Nutrient Use Efficient Genotypes on Tuber and Leaf Cyanogen and Tuber Starch in Cassava
Not Available
 
Creator T. R. Sruthi1, N. Nooruniza1, K. Susan John2, J. Sreekumar2 and M. N. Sheela2
 
Subject Nutrient efficient, cassava, leaf cyanogen, tuber starch
 
Description Not Available
The present study reports the variation in tuber quality parameters like starch, cyanogenic glucosides
(CN) and leaf CN content among four nutrient use efficient (NUE) cassava genotypes viz., Sree Pavithra,
CI-905, CI-906 and 7 III E3-5. The impact of secondary nutrient Mg and micronutrients viz., Zn and
B on the above parameters in cassava variety Sree Visakham (H-1687) towards the later period of
maturity of cassava also was studied. Among the genotypes, Sree Pavithra had the least and 7 III E3-
5 had the highest tuber CN. A decreasing trend in tuber CN from 7-9 months after planting (MAP) was
recorded in the genotypes. The leaf CN was very high compared to tuber CN. The highest leaf CN was
in 7 III E3-5 as in the case of tuber CN. The genotype CI-906 had the lowest leaf CN followed by Sree
Pavithra. But the leaf CN increased at 9 MAP compared to 7 and 8 MAP. There was a positive
correlation between tuber and leaf CN. In the case of tuber starch, there was a significant difference
among genotypes with Sree Pavithra on par with CI-906, having the highest, and 7 III E3-5 on par with
CI-905 having lower starch contents. However, there was a significant increase during 8-8.5 MAP.
As regards to the influence of secondary and micronutrients, compared to PoP, different combinations
of these nutrients resulted in significantly low tuber CN which in turn were on par. The stage of plant
growth did not impact on tuber CN. Leaf CN was considerably lowered due to the application of
secondary and micronutrients. Compared to PoP, the leaf CN was highest under three nutrient
combination of Mg, Zn and B as well as Zn along with Mg. A sharp decline in leaf CN was also noticed
from7 to 9 MAP. Significant positive correlation was seen between tuber and leaf CN. In the case of
tuber starch, application of Mg along with Zn resulted in significantly the highest tuber starch whereas
application of Mg alone, resulted the lowest. Significant negative correlation was seen between tuber
starch and tuber CN and between tuber starch and leaf CN.
Not Available
 
Date 2021-08-06T04:03:26Z
2021-08-06T04:03:26Z
2019-06-01
 
Type Article
 
Identifier Not Available
0378-2409
http://krishi.icar.gov.in/jspui/handle/123456789/53327
 
Language English
 
Relation Not Available;
 
Publisher Indian Society for Root Crops