GERMINATION AND SEEDLING SURVIVALITY OF RICE (Oryza sativa L.) UNDER ANOXIA

被引：0
作者：
Paul, Deepjyoti [1 ]
Das, Ranjan [1 ]
Das, Sangita [1 ]
Choudhury, Hemendra [1 ]
机构：
[1] Assam Agr Univ, Dept Crop Physiol, Jorhat 785013, Assam, India
来源：
APPLIED BIOLOGICAL RESEARCH | 2021年 / 23卷 / 01期
关键词：
Anoxia; amylase activities; coleoptiles; genotypes; germination; rice; stress tolerance; TOLERANCE; STARCH; GROWTH;
D O I：
10.5958/0974-4517.2021.00012.4
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
A study was conducted at the Stress Physiology Laboratory, AAU, Jorhat, Assam (India) during kharif season 2016-2017. Rice genotypes (146 nos.) collected from different ecotypes were screened for anaerobic tolerance based on their survivality. Of the genotypes evaluated, six genotypes viz., Ronga Lahi, 'Ronga Bao', 'Bangali Lahi', 'Suwag Moni Horu', 'Asra 123' and 'Asra 8' were selected as anoxia tolerant genotypes on the basis of seed germination, seedling survival and growth. These genotypes were also evaluated for amylase activity. The result revealed a significant variation in genotypes during anoxic germination in terms amylase activity. Higher alpha- and beta-amylase activities were observed in 'Asra 123', followed by 'Asra 8' as compared to the susceptible genotype 'IR-64'. Increased amylases activity in tolerant genotypes might be attributed to the production and maintenance of sufficient amount of soluble sugar under anoxic condition during germination. The study revealed that 'Asra 123', 'Asra 8', 'Ronga Lahi', 'Ronga Bao', 'Bangali Lahi' and 'Suwag Moni Horu' could successfully be germinated and established under anoxic condition.
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页码：95 / 101
页数：7
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