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Yoshida, S., Forno, D.A. and Cock, J.H. (1971) Laboratory Manual for Physiological Studies of Rice. Laboratory Manual for Physiological Studies of Rice, The International Rice Research Institute, Los Baños, Laguna.

has been cited by the following article:

  • TITLE: Preliminary Variations in Physiological Modules When sub1A QTL Is under Soil-Moisture Deficit Stress

    AUTHORS: Indraneel Saha, Arnab Kumar De, Arijit Ghosh, Bipul Sarkar, Narottam Dey, Malay Kumar Adak

    KEYWORDS: sub1A, Rice, Water Deficit, Growth, Metabolism

    JOURNAL NAME: American Journal of Plant Sciences, Vol.9 No.4, March 19, 2018

    ABSTRACT: The present investigation embodies with some distinct physiological responses of rice seedlings bearing sub1A allele when cultured under soil moisture deficit condition. In order to estimate the extent of variation of sub1A allele in cv. Swarna Sub1, few specific responses were recorded. Ongoing days (2, 4 and 8) of water stress, rice seedlings were mostly concerned with regulation of root growth through 1.24%, 4.10% and 8.96% as compared to control. When relative growth rate (RGR) of the biomass was considered, it recorded a significant down regulation maximum by 27.27% over non-stressed plants. The light absorbing capacity of foliages in terms of leaf mass ratio (15.62%) and specific leaf weight (8.45%) was also curtailed under stress contiguously with total dry matter accumulation. For light harnessing mechanism, the contributing pigments were most significantly (p ≤ 0.05) affected with maximum variation for chlorophyll (31.29%), lycopene (79.31%) and carotenoids (55.31%) over control. NAR was strikingly differed by 32.72% under water stress in average. To support the water stress related depletion of moisture tension, plants recorded RWC with a ranges of 6.62% to 21.57% under stress than control. In balance of cellular dehydration rice seedlings were recorded 6.72% loss of proline, but up-regulated the release of free amino acids by 1.35 fold. In expression of generic potential for sub1A allele, the growth inhibition even under water deficit was evident from carbohydrate depletion by 10.93%, 11.42% and 24.35% through days of treatments. This was supported by depletion of apoplastic and cellular invertase activities by 90.90% and 72.91%. The possibility for sub1A in tolerance of deficit water status in rice culture has been discussed in more details.