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ThesisItem Open Access Breeding and Evaluation of Hybrid Seedlings of Chrysanthemum for Pot Culture(Department of floriculture and Landscaping College of Agricultue PAU, Ludhiana, 2000) Sheela, J. SathyaThesisItem Open Access Induction of Variability in Chrysanthemum morifolium Ramat Syn, Dendranthema grandiflora tzevlev, Throught Tissue Culture(Department of floriculture and Landscaping College of Agricultue PAU, Ludhiana, 1995) Mueen, Qazi Tassaduq; Arora, J. SThesisItem Open Access Response of carnation (Dianthus Caryophyllus L.) To Photoperoidism (Extended day Length and Gibberellins(Punjab Agriculture University, 1992) Neelofar; Arora, C. LThesisItem Open Access Effect of environment and nitorgen levels on the grwoth, flower adn bulb productionof iris (I. Hollandica)(Department of floriculture and Landscaping College of Agricultue PAU, Ludhiana, 2001) Shairy; Arora, J. SThesisItem Restricted Breeding of hybrid roses for green house cultivation(Department of floriculture and Landscaping College of Agricultue PAU, Ludhiana, 2001) Singh, Vikash Kumar; Arora, J.L J.LThesisItem Open Access Effect of potting media on the growth of pot plants(Department of floriculture and Landscaping College of Agricultue PAU, Ludhiana, 2000) Dhir, Ritu; Grewal, H. SThesisItem Open Access Effect of Planting times and spacings on flower productin of marigold(Department of Vegetable Crops, Landscaping and Floriculture APU-Ludhiana, 1988) Singh, Jasvir; Arora, J. SThesisItem Open Access Studies on the cut flower production of chrysanthemum (Chrysanthemim morifolium ramat. ) Variety fred yule(Department of Vegetable Crops, Landscaping and Floriculture APU-Ludhiana, 1985) Rana, Sunanda; Gill, A. S. SThesisItem Open Access Pollen storage study in Gladiolus (Gladiolus grandiflorus L.)(Punjab Agricultural University, Ludhiana, 2017) Simarjit Kaur; Dhatt, K.K.The present investigations entitled ‘Pollen storage study in Gladilous (Gladiolus grandiflorus L.)’ were undertaken in the experimental field area and laboratory of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana, during 2016-17. The experimental material comprised of two varieties ‘Punjab Glance’ as female parent and ‘Yellow Stone’ as male parent. The corms of both the varieties of gladiolus were planted at 15 days interval from October–December to obtain fresh pollen and flowers for pollination. Pollen grains of variety Yellow Stone packed in plastic vials were stored in desiccator at ambient temperature, desiccator with CaCl2 at ambient temperature, desiccator under refrigerator, desiccator with CaCl2 under refrigerator (5˚C), lower cabin under refrigerator (5˚C), freezer (-4°C) for 16 weeks from January-April. Pollen stored under different storage methods was used for determination of pollen viability and pollinating the floret of Punjab Glance along with fresh pollen. Maximum pollen viability was recorded under freezer i.e. 82.87%. Pollen stored under freezer retained pollen viability for longer duration and it was 85.09% after 11weeks and pollen viability decreased to 49.58% after 16 weeks of storage. The capsule setting (61.97%) and number of seeds per capsule (35.42) were maximum when floret pollinated with pollen stored in freezer. Maximum pollen length (29.45µm) and width (15.44µm) obtained under freezer. Pollen of the gladiolus can be stored for longer duration under freezer condition up to 11 weeks of storage without any serious loss of viability. Maximum seed germination (67.12%) was recorded from the seed of flowers pollinated by pollen stored in freezer and it was comparable. The pollen of gladiolus can be stored in freezer (-4˚C) up to 2½ month for obtaining good seed set and pollen viability.
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