STUDIES ON INDUCED MUTATAION IN GLADIOLUS (Gladiolus hybrida L.) THROUGH GAMMA RAYS

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dc.contributor.advisorPhookan Borkakati, Reena
dc.contributor.authorPRIYA, SHEPHALI
dc.date.accessioned2020-06-17T10:33:55Z
dc.date.available2020-06-17T10:33:55Z
dc.date.issued2019-07
dc.description.abstractGladiolus (Gladiolus hybrida L.) is one of the important bulbous crop, cultivated in various parts of the country. It is an important bulbous crop which occupies important position among cut flowers in domestic as well as international market so, mutation is important for obtaining variety easily. In the present investigation to find out the genetic variability for morphological and quality traits, their association and mutation frequency, effectiveness, efficiency of gamma rays in four genotypes for 13 characters. A factorial randomized block design was conducted in four genotypes which is treated with six doses of gamma rays. The analysis of variance for factorial randomized block design it was observed that significant variation was there for all characters except no. of leaves per plant among 4 varieties. The character spike length, no. of spike per plant exhibited highest PCV, GCV in M1V1 generation. The character plant height, no. of spike exhibited highest PCV, GCV in M1V2 generation. Heritability with genetic advance was found to be high in vase life, days to sprouting, spike length, rachis length and no. of floret per spike in M1V1 generation. In M1V2 generation, heritability high days to sprouting, spike length, vase life, days to spike initiation, breadth of leaf. The effect of interaction between variety and doses indicated that the better plants was found at 20 Gy and as decreased as the doses were increases ‘Red Majesty’ is the best performed variety for breadth of leaf, no. of floret per spike, length of floret, breadth of floret, vase life, no. of spike per plant followed by Red Candiman, Pasibica Beauty. In the correlation studies no. of spike per plant showed a highly significant and positive correlation with the characters plant height, spike length, rachis length, no. of floret per spike, length of floret and vase life. The study of path analysis revealed that the characters no. of floret per spike, breadth of leaf and days to spike initiation had direct positive effect on no. of spike whereas days to sprouting, rachis length, breadth of floret, plant height and vase life showing negative direct effect. Highest mutation frequency observed in 40Gy, mutagenic effectiveness in 20Gy and efficiency in 50Gy of variety Red majesty.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810147702
dc.language.isoenen_US
dc.publisherAAU, Jorhaten_US
dc.subPlant Breedingen_US
dc.subjectnullen_US
dc.themeSTUDIES ON INDUCED MUTATAION IN GLADIOLUS (Gladiolus hybrida L.) THROUGH GAMMA RAYSen_US
dc.these.typeM.Scen_US
dc.titleSTUDIES ON INDUCED MUTATAION IN GLADIOLUS (Gladiolus hybrida L.) THROUGH GAMMA RAYSen_US
dc.typeThesisen_US
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