Biodiversity analysis of traditional mango types of Kerala and studies on the reproductive biology of selected popular types
| dc.contributor.advisor | Parmeswaran, N K | |
| dc.contributor.author | Mannambeth Renisha, Jayarajan | |
| dc.contributor.author | KAU | |
| dc.date.accessioned | 2020-11-05T07:41:46Z | |
| dc.date.available | 2020-11-05T07:41:46Z | |
| dc.date.issued | 2011 | |
| dc.description | MSc | en_US |
| dc.description.abstract | The present investigations entitled “Biodiversity analysis of traditional mango types of Kerala and studies on the reproductive biology of selected popular types” were undertaken at the Department of Pomology and Floriculture, College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur during 2009-2011. Major objectives of the study were to assess the biodiversity status of traditional mango types in selected villages of Thrissur and Palakkad districts of Kerala by applying participatory tools and studying the floral biology, pollen characters, pollination and self and cross compatibility factors in six mango varieties commonly grown in the homesteads of Kerala. These studies formed a part of the departmental project entitled “Hybridization of mango varieties of Kerala” and were taken up under two broad components during implementation. Component I: Primary assessment of indigenous mango types was initiated by surveying homesteads in Vallachira and Pazhayannur GP‟s of Thrissur district and Kollemgode and Muthalamada GP‟S of Palakkad district. Homesteads were selected by snowball sampling. Dominant local types in these homesteads were Muvandan in Pazhayannur and Chandrakkaran in Vallachira GP of Thrissur whereas Muvandan, Priyur, Chandrakaran and some unnamed landraces in Kollemgode and Muthalamada GPs of Palakkad district. Final village level biodiversity assessment was done in Maruthampadam in Pazhayannur GP (Thrissur Dt) and Erippadam in Muthalamada GP (Palakkad Dt.). Farmer participatory 4- cell analysis (FCA) and focus group discussions (FGD) were made by organizing farmers interface in these villages. Data recorded showed that Maruthampadam village was richer in crop diversity than Erippadam. Based on the FCA, Muvandan, Pulimanga and Gomanga could be grouped as the „common‟ types of the Maruthampadam village while the „rare‟ types included Karpuramanga, Ganapatimookan, Kilichundan, Chandrakaran, Kottamavu, Sindhuram, Marathakam and Mundappa . „Common‟ mango types in Erippadam village were Alphonso, Banganapalli, Kilichundan, Neelum, Sindhuram, Muvandan, Nadasala and the „rare‟ types being Chandrakaran, Kilimook, Mallika and Mundappa. The varietal richness of Erippadam was higher than Maruthampadam village. In Maruthampadam village, recorded evenness value was highest for Muvandan while it was zero for the „rare‟ and „vulnerable‟ types. In Eripaddam, „common‟ types registered higher evenness values than „rare‟ types. Varietal richness as related to size of gardens indicated positive relationship in Erippadam village. ITK documentation from the villages provided some useful information on the traditional processing and product diversification of mango fruits practiced by the villagers in Maruthampadam. Component II: The varieties involved in the study were Muvandan, Neelum, Priyur, Vellaikolumban, Banganapalli and Alphonso. Mango flowering in both the seasons during 2009-10 and 2010-11 were of much erratic, poor and belated nature. A definite influence of the shift in north east monsoon pattern experienced during these periods could be attributed as the major contributory factor to the above. Peak anthesis was noted between 7.30 and 11.00am in all varieties and anther dehiscence between 8.30 am and 12 noon. Highest stigma receptivity was on the day of anthesis. Panicles of Muvandan and Priyur were longer than the other varieties. The varieties Neelum, Priyur, Alphonso, Vellaikolumban, and Muvandan exhibited a mixed phase while opening out but in Banganapalli, flower opening started with a pure male phase and thereafter entered mixed phase. Inflorescence rachis of Muvandan was dark red in colour where as in Neelum and Alphonso it was light red. Light green coloured inflorescence rachis was observed in Banganapalli and Vellaikolumban while in Priyur it was light green with reddish tinge. Size of inflorescence was highest in Muvandan while it was lowest in Neelum. Intensity of flowering per unit area of tree canopy was highest in Alphonso where as it was lowest in Vellaikolumban. Highest percentage of hermaphrodite flowers was recorded in Vellaikolumban (46.38%) while it was lowest in Banganapalli (0.02 %). The varieties Neelum, Priyur, Alphonso and Vellaikolumban showed round shaped pollen whereas oval and oblong shaped pollen was noted in Banganapalli and Muvandan, respectively. The size of the pollen ranged in between 27.29μm and 33.34μm. Pollen production and viabiliy were related to climatic variations. Pollen storage in refrigerated conditions retained viability for 72 hours. Selfing did not result in fruit setting and apparently indicating the involvement of incompatibility factors. It has to be further confirmed by flourimetric methods. Crossing among the varieties affected fruit setting obviating the involvement of incompatibility factors. Four successful hybrid mango progeny seedlings are available finally for performance evaluation. | en_US |
| dc.identifier.citation | 173191 | en_US |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810154484 | |
| dc.keywords | Pomology and Floriculture | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 89 | en_US |
| dc.publisher | Department of pomology and floriculture, College of Horticulture, Vellanikkara | en_US |
| dc.sub | Horticulture | en_US |
| dc.theme | Traditional mango types of Kerala and studies on the reproductive biology of selected popular types | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Biodiversity analysis of traditional mango types of Kerala and studies on the reproductive biology of selected popular types | en_US |
| dc.type | Thesis | en_US |