Anatomical aspects of fruit drop in mandarin cv. Kinnow (C. nobilis Loureiro X C. deliciosa Tenore)

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dc.contributor.advisorGupta, Monika
dc.contributor.authorSidakmeet Singh
dc.date.accessioned2021-09-03T05:04:48Z
dc.date.available2021-09-03T05:04:48Z
dc.date.issued2020
dc.description.abstractThe present study entitled “ Anatomical aspects of fruit drop in mandarin cv. Kinnow (C. nobilis Loureiro X C. deliciosa Tenore) was conducted in the College Orchard and laboratories, Department of Fruit Science, Punjab Agricultural University, Ludhiana during 2019-2020. It consisted of two experiments, viz., to study the anatomical and biochemical dynamics occur during fruit drop and to evaluate new chemicals for effective control of fruit drop in Kinnow mandarin. The length, girth and weight of fruit stalk, total soluble proteins, total soluble sugars and minerals were recorded to be significantly higher in non-abscised fruits as compared to the stalk of abscised fruits in May and October during the year 2019. Lower activity of cell wall degrading enzymes was recorded in non-abscised fruit stalks as compared to abscised fruit stalks. Absence of abscission zone, thick xylem vessels and reduced pith were observed in the sections of nonabscised fruit stalks; probably are the reasons for healthy fruit stalks in non-abscised fruits. Foliar application with different combinations of fungicides and plant growth regulators were given to the trees to reduce the fruit drop and increase the fruit yield. Fruit set per cent was found to be non-significant among different treatments. According to periodic fruit drop data, it was found to be maximum in the month of May followed by in June. The foliar application of 10 ppm 2,4-D sodium salt and 0.1% Azoxystrobin (18.2%)+Difenoconazole (11.4%) was found to be significantly superior to reduce the fruit drop and increase the fruit yield and to improve other quality parameters (TSS, acidity, vitamin C, flavonoids, phenols and C/N ratio). Maximum fruit weight (185.10 g/fruit), length (6.59 cm) and diameter (7.36) were observed in the fruits picked from trees given the foliar spray of 10 ppm 2,4-D sodium salt and 0.2% Carbendazin (12%)+Mancozeb(63%). Thus, it may be concluded that treatment with 10 ppm 2,4-D sodium salt and 0.1% Azoxystrobin (18.2%)+Difenoconazole (11.4%) was the most effective in controlling the fruit drop and enhance the fruit quality in Kinnow mandarin.en_US
dc.identifier.citationSidakmeet Singh (2020). Anatomical aspects of fruit drop in mandarin cv. Kinnow (C. nobilis Loureiro X C. deliciosa Tenore) (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810175009
dc.keywordsKinnow, fruit drop, fungicides, plant growth regulatoren_US
dc.language.isoEnglishen_US
dc.pages66en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemAnatomical aspects of fruit drop in mandarin cv. Kinnow (C. nobilis Loureiro X C. deliciosa Tenore)en_US
dc.subFruit Scienceen_US
dc.themeAnatomical aspects of fruit drop in mandarin cv. Kinnow (C. nobilis Loureiro X C. deliciosa Tenore)en_US
dc.these.typeM.Scen_US
dc.titleAnatomical aspects of fruit drop in mandarin cv. Kinnow (C. nobilis Loureiro X C. deliciosa Tenore)en_US
dc.typeThesisen_US
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