Genetic and biochemical analysis of bitterness in citrus

Simple item page
dc.contributor.advisorSidhu, Gurupkar Sigh
dc.contributor.authorPriyanka
dc.date.accessioned2021-09-09T06:52:58Z
dc.date.available2021-09-09T06:52:58Z
dc.date.issued2020
dc.description.abstractCitrus is the economically important fruit crop belongs to the family Rutaceae. Citrus fruit have abundance of health promoting substances which has various antimicrobial, antiseptic and anticancerous properties. The consumer’s acceptability of citrus juice gets lowered due to the problem of delayed bitterness. Previously identified LGT gene responsible for delayed bitterness was confirmed in the citrus germplasm which was present in all the studied citrus germplasm. The expression of this gene is highest during late fruit development stage and seeds exhibit the highest expression as compared to peel. Among three tissues studied, the highest gene expression was observed in the peel of grapefruit during late fruit development stage. Among studied genotypes, seeds of pummelo had the highest gene expression during late fruit development stage. The expression of this gene increases from early to late fruit developmental stage irrespective of the three tissues studied. The major delayed bitterness causing components are limonoids which occurs in glucoside and aglycone forms were estimated. Among all the commercial recommended scions, Pummelo had highest limonin aglycone content and glucoside content in leaves, peel and seeds. The flavonoid content was also highest in pummelo in all three tissues studied. The effect of citrus rootstocks on morphological, vegetative, physico-chemical, physiological traits and leaf nutrient status in three mandarins (Kinnow, Daisy and W. Murcott) was studied. The total phenolics, antioxidants, vitamin C content increased from early to late fruit development stage. The fruit and vegetative characters also followed the similar trend from early to late fruit development stage. The physiological characters decreased from early to late fruit development stage in all three mandarins irrespective of the rootstock. Leaf nutrients status of three mandarins show variability on different rootstocks studied.en_US
dc.identifier.citationPriyanka (2020). Genetic and biochemical analysis of bitterness in citrus (Unpublished Ph.D. Dissertation). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810175555
dc.keywordsCitrus, delayed bitterness, rootstocks, scion, glucoside, aglyconeen_US
dc.language.isoEnglishen_US
dc.pages163en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemGenetic and biochemical analysis of bitterness in citrusen_US
dc.subAgricultural Biotechnologyen_US
dc.themeGenetic and biochemical analysis of bitterness in citrusen_US
dc.these.typePh.Den_US
dc.titleGenetic and biochemical analysis of bitterness in citrusen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Ph.D. Dissertation (Priyanka (L-2014-A-14-D)).pdf
Size:
1.92 MB
Format:
Adobe Portable Document Format
Description:
Ph.D.
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