Studies on pheno-physiology and pollination in commercial cultivars of litchi (Litchi chinensis Sonn.)
| dc.contributor.advisor | Rani, Ruby | |
| dc.contributor.author | Kumari, Shweta | |
| dc.date.accessioned | 2017-07-05T10:27:29Z | |
| dc.date.available | 2017-07-05T10:27:29Z | |
| dc.date.issued | 2017-07 | |
| dc.description.abstract | Litchi (Litchi chinensis Sonn.) is an evergreen, subtropical fruit tree belonging to the family Sapindaceae. India is the second largest producer of litchi accounting for about one-fifth of the global production and has a good export potential. Of the total production of litchi in India, 40% is contributed by Bihar. It requires an exact climate for its optimum vegetative and reproductive phenological stages. In general litchi plants produce three flushes after fruit harvest till panicle emergence. The age of the vegetative flush, or the degree of dormancy, appears to have a strong influence on the subsequent shoot development of litchi. The carbon-to-nitrogen in plants has been considered as a factor affecting flowering. Evidence has revealed intricate and integrated nitrogen and carbon sensing and signaling network to control various developmental processes. Very little information is available on flowering habit and floral biology of litchi which are very important for varietal improvement. Therefore it is essential to know the exact stage of maturity of vegetative flush and physiology behind flower emergence and types of panicle in agro climate of Bihar. Little study has been done till date to understand the relationship between vegetative flushes and flowering. Thus effect of selfing and cross-pollination is the need of hour to know the cross/self incompatibility in litchi. Keeping these points in view present experiment entitled “Studies on pheno-physiology and pollination in commercial cultivars of litchi (Litchi chinensis Sonn.) was conducted during the year 2016-17 in horticulture garden, BAU, Sabour with 4 cultivars viz; Deshi, Purbi, Bedana and Kasba as treatments and one plant of each cultivar treating as one replication under RBD design. The date of flush emergence ranged from 18/07/2016 to 12/02/2017 in all 4 cultivars under study. Deshi was the earliest to initiate flush emergence. Bedana has the longest duration of flushing pattern. Deshi was the earliest to initiate panicle emergence followed by Purbi at Sabour condition. Length and width of panicle was recorded to be the longest in Purbi (41.8 cm) whereas the shortest (31.6 cm) in Bedana. Flushes emerged during mid-season had maximum percentage of shoots that flowered. Duration of flowering was observed to be the longest in Kasba (16.6 days) followed by Purbi which took 15.6 days. All four cultivars under study differed significantly with respect to sex-ratio. Poor self-compatibility has been found in these cultivars. C/N ratio was found to be significantly higher at flowering stage. Physiological parameters like photosynthesis, stomatal conductance, internal CO₂, chlorophyll, carotene and xanthophyll content were found to be higher at flowering stage than pre-flowering stage. The fruit growth started from seed development and later aril development had started after 17 days from the fruit set. T.S.S./ acid ratio was found to be the highest in cv. Beadana (67.64) followed by Purbi (64.66). This pheno-physiology and pollination study in these cultivars provide the basic knowledge of flushing pattern, flowering and fruiting behaviour and physiology behind the development process and will help farmers to manipulate the production technology for better yield and quality. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810024392 | |
| dc.language.iso | en | en_US |
| dc.pages | 93 | en_US |
| dc.publisher | Department of Horticulture (Fruit & Fruit Techology), BAU, Sabour | en_US |
| dc.sub | Horticulture | en_US |
| dc.subject | null | en_US |
| dc.theme | Pomology | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Studies on pheno-physiology and pollination in commercial cultivars of litchi (Litchi chinensis Sonn.) | en_US |
| dc.type | Thesis | en_US |