Submergence tolerance in relation to application time of nitrogen and phosphorus in rice (Oryza sativa L.)

Gautam, Priyanka; Nayak, A. K.; Lal, Banwari; Bhattacharyya, Pratap; Tripathi, Rahul; Shahid, Mohammad; Mohanty, SK; Raja, R.; Panda, B.B.

doi:10.1016/j.envexpbot.2013.11.012

Cited by 40 publications

(54 citation statements)

References 18 publications

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“…The phenomenon of posthypoxic injury is probably brought about by generation of ROS (Ram et al, 2002;Ella et al, 2003). Postsubmergence N and P application maintained higher level of chlorophyll and conserved carbohydrate and increasing submergence tolerance (Gautam et al, 2014a;2014b). This study confirmed that post-submergence fertilizer application (N, P and K) help in increasing shoot growth and yield of tolerant rice variety (PCR2) and also stabilized shoot growth and yield of intolerant rice variety (KSM1).…”

Section: Discussionsupporting

confidence: 71%

“…It has been shown that at the reproductive stage, submergence could cause more damage in term of survival and productivity of rice as compared to active tillering and panicle initiation stage (Gautam et al, 2014b). Our results show that flooding at tillering stage (60 DAG) and reproductive stage (90 DAG) did not decreasing shoot biomass of three rice varieties.…”

Section: Discussionsupporting

confidence: 53%

“…Under deep flood condition (50 cm of water from soil surface), while 30 DAG plants were completely submerged, the leaves and the panicles of 60 and 90 DAG plants were above water surface. It has been proposed that at early growth stage rice has high capability of internode elongation but can easily be injured by submergence stress because plant was succulent and having high non-structure carbohydrate (Bailey-Serres et al, 2010;Gautam et al, 2014b). In our study, the submergence of rice at 30 DAG resulted in more injury with less recovery capacity than submergence at 60 and 90 DAG, which manifests itself by the lowest grain yield.…”

Section: Discussionmentioning

confidence: 66%

“…Moreover, fertilizer application seems to increase growth and stabilized yield of NG5, which was a moderate tolerant rice variety. N was found to improve the vigorous of rice plants for better tolerance to submergence at later growth stages (Gautam et al, 2014b). This responsiveness could be a result of 60 and 90 DAG plants had more shoot dry biomass than 30 DAG plants.…”

Section: Discussionmentioning

confidence: 93%

“…Proper time of fertilizer application is a major agronomic practice promoting to the growth and yield of rice even under submergence. Post-submergence nutrient management could contribute substantially towards increasing productivity in flood-prone areas (Gautam et al, 2014a;2014b;. It has been shown that submergence tolerant genotypes had greater variance in partitioning of photo assimilate and carbohydrate for survival comparing to productivity (Anandan et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

See 4 more Smart Citations

The Time of Flooding Occurrence is Critical for Yield Production in Rice and Vary in a Genotype-Dependent Manner

Mongon

Jantasorn

Oupkaew

et al. 2017

OnLine Journal of Biological Sciences

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Flash floods occur in rainfed lowland and flood-prone areas and have a profound incidence on crop yield, which is tightly linked to worldwide food insecurity. The most flooding-threatened crop is rice. Under this condition, rice undergoes anoxic and post-anoxic shock that affects its growth, development capacity and ultimately causes an important grain yield loss. Therefore, the introduction of submergence-tolerant varieties in a flood-prone area was proposed as a preventive solution to limit these effects. Such a solution presents room for improvement and would benefit from a post-submergence management to ensure a better rice yield, yet remains to be defined. In this study, we assessed the effect of flooding on growth and yield of different rice varieties submerged at a different time of their developmental stage. We compared three rice varieties, namely Prachinburi 2 (PCR2), Kao Samer 1 (KSM1) and Neang Guang 5 (NG5), for their tolerance to 14 days of 50 cm depth submergence at 30, 60 and 90 Days After Germination (DAG). At 30 DAG, the recovery ability of KSM1 was restricted, showing decreased shoot dry mass and grain yield, whereas photo assimilate transport of PCR2 and NG5 was altered, resulting in high leaf nitrogen (N) concentration but low grain yield. Our data revealed that rice varieties were more tolerant to submergence at 60 and 90 DAG. In opposition to KSM1 and NG5 grain yield, PCR2 showed rapid recovery with a marked increase of shoot dry mass and grain yield. Taken together, our result indicates that de-submergence at late developmental stage promotes rice recovery and yield of tolerant variety. Gene discovery work is required to identify molecular players and pathways that are involved in submergence stress recovery in rice.

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