MORPHOLOGICAL CHARACTERIZATION OF POTATO (Solanum tuberosum L.) GENOTYPES FOR YIELD ATTRIBUTING TRAITS UNDER LONG DAY CONDITION
| dc.contributor.advisor | TIGGA, TIGGA | |
| dc.contributor.author | MOHANTY, RATIKANTA | |
| dc.date.accessioned | 2023-01-03T10:57:05Z | |
| dc.date.available | 2023-01-03T10:57:05Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | A research was performed out entitled “Morphological characterization of potato (Solanum tuberosum L.) genotypes for yield attributing traits under long day condition” at the Potato research farm Tirhut College of Agriculture, Dholi, Bihar, during Rabi 2021-2022, to assess the potato genotypes under artificially created extended photoperiod condition. 25 genotypes with Randomized Complete Block Design and 3 replications of the lines were set up in extended photoperiod. Variability, genetic advance, inter-trait association, path analysis, diversity analysis for yield attributing traits and identification of flowering genotypes under extended photoperiod condition at Dholi were investigated. Analysis of variance in this circumstance showed considerable variations amongst the lines for all the yield attributing characters under investigation. High value of GCV and PCV were observed for the parameters like; number of shoots per plant (NSPP), number of tubers per plant (NTPP) and marketable tuber yield (MTY) indicated more variation and more chances of effective selection compared to other studied traits under long day condition. The traits like number of shoots per plant (NSPP), number of compound leaves per plant (NCLP), number of tubers per plant (NTPP), yield per plant (YPP), marketable tuber yield (MTY), unmarketable tuber yield (UMTY) and total tuber yield (TTY) manifested high heritability coupled with high genetic advance as percent of mean. The characters such as marketable tuber yield (MTY), yield per plant (YPP), tuber dry matter (TDM), unmarketable tuber yield (UMTY), number of compound leaves per plant (NCLP), plant height (PH) and number of tubers per plant (NTPP) were of prime importance in the process of selection for yield improvement, as they showed positive association with total tuber yield and a positive direct effect on the yield and also all other traits gave indirect contribution to the yield through these traits. 25 lines were distinguished into eight clusters in extended photoperiod sown scenario. In this scenario between clusters IV and VIII highest inter cluster distance was reported, followed by cluster V and cluster VII, cluster IV and cluster VI. Minimum inter-cluster distance measured between cluster III and cluster V. Clusters II, III, V, VI and VIII were monogenotypic clusters. The highest intra-cluster D2 value was found in cluster IV, followed by clusters I and VII under long day scenario. Maximum contribution to total genetic diversity was recorded for number of tubers per plant (NTPP) demonstrating that genotypes for the aforementioned characteristic greatly differ genetically from one another. Genotypes such as K. Garima and K. Pukhraj from cluster IV can be employed as donor parent in a hybridization programme to increase potato yield under extended photoperiod condition. Under this condition eighteen out of the twenty five genotypes flowering characteristics were developed viz: Atlantic, P-56, K. Himsona, K. Lalit, K. Mohan, K. Lalima, CP-4404, K. Frysona, K. Chipsona-3, J-15-2, K. Khyati, K.Chipsona-1, K. Garima, K. Pukhraj, K. Shailja, K. Arun, K. Pushkar and K. Manik. | en_US |
| dc.identifier.other | M/PBG/350/2020-21 | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810191061 | |
| dc.keywords | Morphological, characterization, Potato, Solanum tuberosum L., genotypes, yield, attributing traits, Genetics and Plant Breeding. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 89 p.+ i-vii (Bibliography) | en_US |
| dc.publisher | DRPCAU, PUSA | en_US |
| dc.sub | Genetics and Plant Breeding | en_US |
| dc.theme | Morphological characterization of potato (Solanum tuberosum L.) genotypes for yield attributing traits under long day condition. | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | MORPHOLOGICAL CHARACTERIZATION OF POTATO (Solanum tuberosum L.) GENOTYPES FOR YIELD ATTRIBUTING TRAITS UNDER LONG DAY CONDITION | en_US |
| dc.type | Thesis | en_US |