Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda

Seeds of African marigold cv. 'Pusa Narangi Gainda' were irradiated with 0, 100, 200, 300 and 400 Grays of gamma rays to induce mutation. Seeds were sown just after irradiation and 30-day old seedlings were transplanted into beds. Reduction in survival percentage, plant height, number of b...

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Autores principales:	Viveka Nand Singh, B K Banerji, A K Dwivedi, A K Verma
Formato:	article
Lenguaje:	EN
Publicado:	Society for Promotion of Horticulture - Indian Institute of Horticultural Research 2009
Materias:	tagetes erecta african marigold pusa narangi gainda gamma irradiation induced mutation Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/2e79f0d9eb154ae297625eae22c11831
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spelling	oai:doaj.org-article:2e79f0d9eb154ae297625eae22c118312021-12-02T04:01:57ZEffect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda0973-354X2582-4899https://doaj.org/article/2e79f0d9eb154ae297625eae22c118312009-06-01T00:00:00Zhttps://jhs.iihr.res.in/index.php/jhs/article/view/553https://doaj.org/toc/0973-354Xhttps://doaj.org/toc/2582-4899Seeds of African marigold cv. 'Pusa Narangi Gainda' were irradiated with 0, 100, 200, 300 and 400 Grays of gamma rays to induce mutation. Seeds were sown just after irradiation and 30-day old seedlings were transplanted into beds. Reduction in survival percentage, plant height, number of branches, leaf number, leaf size, plant-spread, stem diameter, increased foliage and floral abnormalities were observed upon irradiation and with increase in dose of gamma rays. LD50 was determined on survival basis. Leaf abnormality manifested itself as leathery texture of leaf, enhanced and irregular leaf thickness, asymmetric development of pinnate leaflets, reduction in pinnae number, chlorophyll variegation, pale and deep green leaves, narrow leaves and small leaves. Percentage of abnormal leaves and plants increased with increase in dose of gamma rays. Fasciation of stem was a common abnormality observed in all the treatments. Days to bud initiation, earliness in colour-appearance and days to full bloom were all significantly delayed upon exposure to gamma rays. Flower-head size, height and weight were highest at the lowest dose. Number of ray florets and size (length and width) decreased with increasing radiation dose. Floral abnormalities and % of plants with abnormal flower-heads increased with increasing dose of gamma irradiation. Floral abnormality included fasciation of flower-head and asymmetric development of ray florets. Stimulating effect of gamma irradiation was observed at 100 Grays where almost all the characters studied showed positive correlation, including growth and yield attributes. It is concluded that exposure to 100 Grays of gamma rays in African marigold cv. Pusa Narangi Gainda results in higher yield and marketable bloom.Viveka Nand SinghB K BanerjiA K DwivediA K VermaSociety for Promotion of Horticulture - Indian Institute of Horticultural Researcharticletagetes erectaafrican marigoldpusa narangi gaindagamma irradiation induced mutationPlant cultureSB1-1110ENJournal of Horticultural Sciences, Vol 4, Iss 1, Pp 36-40 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	tagetes erecta african marigold pusa narangi gainda gamma irradiation induced mutation Plant culture SB1-1110
spellingShingle	tagetes erecta african marigold pusa narangi gainda gamma irradiation induced mutation Plant culture SB1-1110 Viveka Nand Singh B K Banerji A K Dwivedi A K Verma Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda
description	Seeds of African marigold cv. 'Pusa Narangi Gainda' were irradiated with 0, 100, 200, 300 and 400 Grays of gamma rays to induce mutation. Seeds were sown just after irradiation and 30-day old seedlings were transplanted into beds. Reduction in survival percentage, plant height, number of branches, leaf number, leaf size, plant-spread, stem diameter, increased foliage and floral abnormalities were observed upon irradiation and with increase in dose of gamma rays. LD50 was determined on survival basis. Leaf abnormality manifested itself as leathery texture of leaf, enhanced and irregular leaf thickness, asymmetric development of pinnate leaflets, reduction in pinnae number, chlorophyll variegation, pale and deep green leaves, narrow leaves and small leaves. Percentage of abnormal leaves and plants increased with increase in dose of gamma rays. Fasciation of stem was a common abnormality observed in all the treatments. Days to bud initiation, earliness in colour-appearance and days to full bloom were all significantly delayed upon exposure to gamma rays. Flower-head size, height and weight were highest at the lowest dose. Number of ray florets and size (length and width) decreased with increasing radiation dose. Floral abnormalities and % of plants with abnormal flower-heads increased with increasing dose of gamma irradiation. Floral abnormality included fasciation of flower-head and asymmetric development of ray florets. Stimulating effect of gamma irradiation was observed at 100 Grays where almost all the characters studied showed positive correlation, including growth and yield attributes. It is concluded that exposure to 100 Grays of gamma rays in African marigold cv. Pusa Narangi Gainda results in higher yield and marketable bloom.
format	article
author	Viveka Nand Singh B K Banerji A K Dwivedi A K Verma
author_facet	Viveka Nand Singh B K Banerji A K Dwivedi A K Verma
author_sort	Viveka Nand Singh
title	Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda
title_short	Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda
title_full	Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda
title_fullStr	Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda
title_full_unstemmed	Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda
title_sort	effect of gamma irradiation on african marigold (tagetes erecta l.) cv. pusa narangi gainda
publisher	Society for Promotion of Horticulture - Indian Institute of Horticultural Research
publishDate	2009
url	https://doaj.org/article/2e79f0d9eb154ae297625eae22c11831
work_keys_str_mv	AT vivekanandsingh effectofgammairradiationonafricanmarigoldtageteserectalcvpusanarangigainda AT bkbanerji effectofgammairradiationonafricanmarigoldtageteserectalcvpusanarangigainda AT akdwivedi effectofgammairradiationonafricanmarigoldtageteserectalcvpusanarangigainda AT akverma effectofgammairradiationonafricanmarigoldtageteserectalcvpusanarangigainda
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Effect of Gamma Irradiation on African Marigold (Tagetes erecta L.) Cv. Pusa Narangi Gainda

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