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Chhabra, Rohit
- Seed Deterioration:An Irresistible Physiological Phenomenon
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Authors
Affiliations
1 Department of Botany, Punjab Agricultural University, Ludhiana (Punjab), IN
1 Department of Botany, Punjab Agricultural University, Ludhiana (Punjab), IN
Source
Rashtriya Krishi (English), Vol 14, No 2 (2019), Pagination: 5-6Abstract
Seed deterioration is the “deteriorative alterations occurring with time that increase the seed’s exposure to external challenges and decrease the ability of the seed to survive”. It leads to reduction in seed quality with storage duration and as the seed germinability decreases causing loss of vigour and making seeds less viable resulting in the death of seedlings in field. The process of seed deterioration could be associated with progressive decrease in germinability, increased mean time of germination, increase in the number of abnormal seedlings and lower tolerance to adverse storage conditions (Dahuja and Yadav, 2015).
References
- Dahuja, A. and Yadav, S. (2015). Biochemical basis of seed deterioration-an overview. Seed Res., 43: 1-8.
- Mahjabin, Bilal S. and Abidi, A.B. (2015). Physiological and biochemical changes during seed deterioration: A Review. Int. J. Recent Sci. Res., 6 : 3416-3422.
- Morello, J. R., Motilva, M. J., Tovar, M. J. and Romero, M. P. (2004). Changes in commercial virgin olive oil (CV Arbequina) during storage with special emphasis on the phenolic fraction. J. Food Chem., 85 : 357-364.
- Shaban, M. (2013). Review on physiological aspects of seed deterioration. Int. J. Agric. Crop Sci., 6 : 627-631.
- Walters, C., Ballesteros, D. and Vertucci, V.A. (2010). Structural mechanics of seed deterioration: Standing the test of time. Plant Sci.,179: 565–573.
- Bakanae:An Emerging Disease of Aromatic Rice
Abstract Views :502 |
PDF Views:0
Authors
Rohit Chhabra
1,
Lavanya Vij
1
Affiliations
1 Department of Botany, Punjab Agricultural University, Ludhiana (Punjab), IN
1 Department of Botany, Punjab Agricultural University, Ludhiana (Punjab), IN
Source
Rashtriya Krishi (English), Vol 14, No 2 (2019), Pagination: 67-68Abstract
Rice is an important cereal cop belonging to family Poaceae and its production is affected by many biotic factors viz., diseases caused by bacteria, nematodes and fungal infestation are the most significant constraints causing low yield of this crop in India. The major diseases that affect the economics of rice are bakanae (Fusarium fujikuroi), blast (Pyriculariaoryzae), stackburn (Alternaria spp.) and brown leaf spot (Bipolarisoryzae) of rice. The worldwide annual losses due to rice diseases are estimated to be about 10-15 per cent on an average basis. In Punjab, Bakanae (Foot rot) has become an economically important disease of aromatic rice cultivars. The word Bakanae is of Japanese origin which means naughty bad seedling referred to as foolish seedling. Very high yield losses due to epidemic breakout of bakanae disease were observed in the rice growing areas in Asia where it holds its high economic value (Adam et al., 2018). Bakanae was first noted by Ito and Kimura in 1828 in Japan. During recent years, the prevalence of this disease has been reported from all parts of Asia. The incidence of bakanae disease in India has particularly been reported in aromatic and improved rice cultivars (Bashyal et al., 2014) thereby, having profound effect on quality of seed.References
- Bashyal, B. M., Aggarwal, R., Banerjee, S., Gupta, S. and Sharma, S. (2014). Pathogenicity, ecology and genetic diversity of the Fusarium spp. associated with an emerging bakanae disease of rice (Oryza sativa L.) in India. In: Microbial diversity and biotechnology in food security (In: Kharwar, et al Eds) Springer, 307-314pp.
- Ghazanfar, M.U., Javed, N., Wakil, W. and Iqbal, M. (2013). Screening of some fine and coarse rice varieties against bakanae disease. J. Agric. Res., 51 : 41-49.
- Kaur, J., Pannu, P. P. S. and Sharma, S. (2014). Morphological, biochemical and molecular characterization of Gibberella fujikuroi isolates causing bakanae disease of basmati rice. J. Mycol. Pl. Pathol., 44 : 78-82.
- Kazempour, M. N. and Elahinia, S. A. (2007).Biological control of Fusarium fujikuroi, the causal agent of bakanae disease by rice associated antagonistic bacteria. Bulg. J. Agric. Sci., 13: 393 - 408.
- Pannu, P. P. S., Kaur, J., Singh, G. and Kaur, J. (2012).Survival of Fusarium moniliforme causing foot rot of rice and its virulence on different genotypes of rice and basmati rice. Indian Phytopath, 65:149-209.
- Puyam, A., Pannu, P. P. S., Kaur, J. and Shikha, S. (2017). Cultural, morphological and molecular variability of Sheld causing foot rot disease of basmati rice in Punjab. J. Mycol. Pl. Pathol., 47 : 369-81.