Evaluasi Beberapa Tolok Ukur Vigor untuk Pendugaan Perpanjangan Masa Edar Benih Padi (Oryza sativa L.)

Sustained low abscisic acid levels increase seedling vigor under cold stress in rice (Oryza sativa L.)

Stress-induced abscisic acid (ABA) is mainly catabolized by ABA 8'-hydroxylase (ABA8ox), which also strictly regulates endogenous ABA levels. Although three members of the ABA8ox gene family are conserved in rice, it is not clear which stressors induce expression of these genes. Here, we found that OsABA8ox1 was induced by cold stress within 24 h and that OsABA8ox2 and OsABA8ox3 were not. In co...

Correlation Studies in Rice (Oryza sativa L.)

Seventy genotypes of rice (Oryza sativa L.) were evaluated during Kharif 2012 to study the nature and extent of correlation among yield and yield attributing characters, days to 50 per cent flowering, days to maturity, number of effective tillers per plant, plant height, panicle length, number of grains per panicle, 1000-grain weight, grain yield per plant, kernel length, kernel breadth and L/B...

QTL Hotspots for Early Vigor and Related Traits under Dry Direct-Seeded System in Rice (Oryza sativa L.)

Strong seedling vigor is desirable trait in dry direct-seeded rice (DSR) for enhancing crop establishment and the ability to compete against weeds. A set of 253 BC3F4 lines derived from cross between Swarna and Moroberekan was phenotyped for early vigor (EV) and 8 related traits viz., early uniform emergence (EUE), shoot length (SHL), stem length (SL), shoot fresh weight (SFW), total fresh weig...

How Rice (Oryza sativa L.), a Semi-Aquatic Plant Adapt to Natural Flood or Submerged Condition? A Physiological Perspective (Bagaimana Padi (Oryza sativa L.), Suatu Tumbuhan Akuatik Menyesuaikan Diri dalam Keadaan Banjir Semula Jadi atau Tenggelam? Suatu Perspektif Fisiologi)

The deficiency of oxygen in water during submergence is one of the frequently perceived environmental factors that limits or hampers production of the rice cultivation. Rice plants comprise of elongated submerged tissues that help to bear with the rise of water level in natural location. This characteristic helps the plant to deal with flooding stress. The mechanism on flooding tolerance and ad...

Iron Bioavailability and Arsenic Uptake in Rice (Oryza sativa L.)