Comparative studies of carbohydrate metabolism in normal, sweet corn and quality protein maize

Simple item page
dc.contributor.advisorChaudhary, Dharampaul
dc.contributor.authorSanjeev Kumar
dc.date.accessioned2019-08-21T04:52:39Z
dc.date.available2019-08-21T04:52:39Z
dc.date.issued2019
dc.description.abstractMaize is one of the world‟s most important cereal and occupies third rank after rice and wheat. Carbohydrates such as sugars (sucrose, glucose, maltose and sorbitol) and starch are the major nutritional component of the major kernel. Sweet corn varieties accumulate high sugars content due to presence of mutants like sh, su etc. Although the biochemical effect of these mutants is well understood but time course evaluation of kernel carbohydrates and enzyme under different genetic background was not known. Present study focused on the temporal profiling of carbohydrate metabolites and key enzymes in normal, sweet corn and QPM lines at three stages (15, 30 and 45 DAP) of kernel development. The result revealed that free sugars decreases, whereas, starch content increases with kernel development. However, sweet corn retained maximum sugars and minimum starch as compared to normal and QPM counterparts at all the stages of kernel development. The rate of sugars catabolism was fast indicating that a narrow window exist for kernel sweetness in sweet corn. The key enzyme of carbohydrate metabolism including invertase, hexokinase and sucrose synthase are retained maximum in sweet corn as compared to their normal and QPM counterparts at 30 and 45 DAP. No significant variation was observed within genotypes of any maize type for the above parameters studied. However, some normal and QPM lines having numerically superior vales of free sugars have been identified which can be further evaluated for developing comparatively sweet normal and QPM varieties.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810122785
dc.keywordsMaize, normal, sweet corn, QPM, Quality Protein Maize, DAP, Days after Pollinationen_US
dc.language.isoenen_US
dc.pages65en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemComparative studies of carbohydrate metabolism in normal, sweet corn and quality protein maizeen_US
dc.subBiochemistryen_US
dc.subjectnullen_US
dc.themeComparative studies of carbohydrate metabolism in normal, sweet corn and quality protein maizeen_US
dc.these.typeM.Scen_US
dc.titleComparative studies of carbohydrate metabolism in normal, sweet corn and quality protein maizeen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Sanjeev thesis after viva 22.07.2019.pdf
Size:
1.03 MB
Format:
Adobe Portable Document Format
Description:
M.Sc.
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Thesis