High-Yielding Performance of A New Rice Variety, Ir53650In Mildly Improved Acid Sulfate Soil Conditions

Kang, Dong-Jin; Futakuchi, Koichi; Dumnoenngam, Somsot; Ishii, Ryuichi

doi:10.1626/pps.10.64

Cited by 8 publications

(5 citation statements)

References 7 publications

(7 reference statements)

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“…Rice as a crop has been reported as sensitive in the seedling and reproductive stages [23,41] and has resulted in reduction of crop yield and productivity [16]. In case of rice, salinity is found to induce both biochemical and physiological changes causing growth inhibition and yield loss [19,[42][43][44][45]. Several physiological parameters have been studied in the process of evaluation of true salt tolerant lines to understand the drastic effects of salt accumulation at physiological level: plant height, plant dry weight, leaf injury and Na + -K + ratio [37,[46][47][48][49].…”

Section: Response Of Rice Under Salinitymentioning

confidence: 99%

Response of Rice under Salinity Stress: A Review Update

Ghosh¹,

Ali²,

Gantait³

2016

J Rice Res

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Salinity has been a key abiotic constraint devastating crop production worldwide. Attempts in understanding salt tolerance mechanisms has revealed several key enzymes and altered biochemical pathways inferring resistance to crop plants against salt stress. The past decades have witnessed extensive research in development of salt tolerant cultivars via conventional means, improvised by modern era molecular tools and techniques. Rice (Oryza sativa L) is the staple food crop across several countries worldwide. Being a glycophyte by nature, its growth is severely imparted in presence of excess salt. Rice is susceptible to salinity specifically at the early vegetative and later reproductive stages and the response of the crop to excessive salt toxicity at biochemical and molecular level as well as physiological level is well studied and documented. An understanding of the specific response of rice to ion accumulation at the toxic level can aid in identifying the key factors responsible for retarded growth and limited production of rice with the future scope of mitigating the same. The present review summarizes the differential responses of rice, in particular, to salt toxicity enumerating the detailed morphological, physiological, biochemical and molecular changes occurring in the plant. An attempt to explain salinity tolerance and its future scope and implications in screening for salt tolerance has also been elucidated in the present study.

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Section: Response Of Rice Under Salinitymentioning

confidence: 99%

Response of Rice under Salinity Stress: A Review Update

Ghosh¹,

Ali²,

Gantait³

2016

J Rice Res

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“…The yield of paddy rice is mainly determined by three components, panicle number per plant, grain number per panicle, and 1,000-grain weight (Hoshikawa, 1989;Kang et al, 2007;Haryanto et al, 2008). In the present study, panicle number per plant ranged from 8 ± 1.5 to 13 ± 1.3, and it was not correlated with grain number per panicle, because Luke Qasan and Germa Bala with the largest number of panicles per plant had the lowest number of grains per panicle, while, Sela Takhar, Sela Doshi and Pashadi Konar with the appropriate number of panicles per plant had the largest number of grains per panicle.…”

Section: Results and Discussion 1．agronomical Characterizationmentioning

confidence: 99%

Characterization of Aroma and Agronomic Traits in Afghan Native Rice Cultivars

Sarhadi

Ookawa

Yoshihashi

et al. 2009

Plant Production Science

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: In this study, we collected native aromatic rice cultivars from north, east and northeast of Afghanistan, and check cultivars from Japan, Thailand and India. We characterized some important agronomic characters such as plant height, panicle number per plant, grain number per panicle, 1,000-grain weight, grain length and grain width to find the desirable characters for breeding programs. Many of them were classified into tall culm rice according to IRRI index, but had thin and slender grain, and strong aroma which are favorable characteristics in Afghanistan and surrounding regions. The aromatic character was characterized by three methods, 1.7% KOH sensory test, gas chromatography-mass spectrometry-selected ion monitoring (GC-MS-SIM), and polymerase chain reaction (PCR) analysis. These three methods gave similar results. Six out of 10 Afghan native rice cultivars were aromatic and four non-aromatic. Among the check cultivars, Basmati 370, Jasmine 85, Izayoi, Oitakoutou and Jakouine were aromatic and Nipponbare non-aromatic. Improvement of aromatic and high yielding rice and reduction of plant height are the important objectives for rice breeding in Afghanistan. The results showed that Pashadi Konar from Afghanistan has the intermediate plant height, heavier 1,000-grain weight (32 g), longer grain (11 mm) and favorable aroma. Therefore, this cultivar may be a good source of aromatic rice germplasm in Afghanistan. To clarify the genetic nature of aroma in rice, we crossed non-aromatic cultivar Nipponbare with aromatic cultivar Jasmine 85, and examined the aromatic character in the F 2 generation by 1.7% KOH sensory test and PCR analysis. Non-aromatic and aromatic characters were segregated at a ratio of 3:1, showing that aroma is controlled by a single recessive gene.

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“…Pathum Tani 1 (PT-1) was used as the reference local variety and IR53650 as the reference variety for acid soil tolerance. We have previously identified IR53650 as an ASS-tolerant variety (Kang and Ishii 2003;Kang et al 2007). Fourteen-day-old seedlings were transplanted to 1/5000 a Wagner pots filled with soil from the ASS paddy field.…”

Section: Determination Of Grain Yield Of Rice Plants Grown In Potsmentioning

confidence: 99%

“…The development of ASS-tolerant rice varieties is another strategy for the improvement of rice yield under ASS conditions (Clark et al 1997;Kang et al 2007), but the development of Altolerant varieties is not so active in rice compared with upland crops such as barley and wheat (Minella and Sorrells 1992;Reid et al 1971). The objectives of the present study are therefore to: 1) identify the ASS-tolerant rice varieties from Korean genetic stock, including high-yielding japonica-indica hybrid varieties which have never been screened for acid soil tolerance; and 2) elucidate the physiological mechanism for ASS tolerance in terms of grain yield and cost-saving conditions, i.e.…”

Section: Introductionmentioning

confidence: 99%

Identification and crop performance of acid sulfate soil-tolerant rice varieties

Kang

Seo

Lee

et al. 2010

J. Crop Sci. Biotechnol.

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The present study aims to: 1) identify acid sulfate soil (ASS)-tolerant rice varieties from the genetic stock of Korean rice (Oryza sativa L.) varieties under ASS conditions; 2) to evaluate their yield performance, and elucidate the physiological mechanism for ASS tolerance with the identified tolerant varieties. Two hundred sixty-six rice varieties were screened for ASS tolerance, and we identified two japonica-indica hybrid varieties, Geumgang (GG) and Pungsan (PS), as having high tolerance under ASS paddy conditions (pH 3). We first conducted a yield trial of GG and PS grown in Wagner pots to determine their potential yields under ASS conditions. A yield trial under paddy field condition followed. In the pot experiment, the ASS-tolerant varieties, GG and PS, showed significantly higher yields than PT-1, which is a local reference variety in mildly improved soil pH conditions (pH 4.1-4.6). Al and Fe content in GG and PS were significantly lower than that of PT-1, so there might be some mechanism that inhibits the absorption of toxic metal ions in the tolerant varieties. In the paddy conditions, the grain yields more than 5 t ha -1 of the two tolerant varieties under mildly improved soil pH condition were significantly higher than PT-1. Dry matter weights of above ground parts also showed the same trend as grain yield. The study demonstrated that the ASS-tolerant japonica-indica rice varieties with high yielding potential could contribute to the improvement of rice yield in ASS regions, and will be good materials for the development of acid soil-tolerant rice varieties.

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High-Yielding Performance of A New Rice Variety, Ir53650In Mildly Improved Acid Sulfate Soil Conditions

Cited by 8 publications

References 7 publications

Response of Rice under Salinity Stress: A Review Update

Response of Rice under Salinity Stress: A Review Update

Characterization of Aroma and Agronomic Traits in Afghan Native Rice Cultivars

Identification and crop performance of acid sulfate soil-tolerant rice varieties

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