OsNAC5overexpression enlarges root diameter in rice plants leading to enhanced drought tolerance and increased grain yield in the field

2012 ◽  
Vol 11 (1) ◽  
pp. 101-114 ◽  
Author(s):  
Jin Seo Jeong ◽  
Youn Shic Kim ◽  
Mark C. F. R. Redillas ◽  
Geupil Jang ◽  
Harin Jung ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Grain Yield ◽  
Root Diameter ◽  
Rice Plants

KOMBINASI BOKASHI DAN PUPUK BUATAN TERHADAP PRODUKSI PADI YANG DITANAM SECARA JAJAR LEGOWO

Jurnal BiBieT ◽  
2016 ◽  
Vol 1 (1) ◽  
pp. 9
Author(s):  
Dewi Rezki
Keyword(s):  
Grain Yield ◽  
Organic Material ◽  
Agricultural Land ◽  
Rice Production ◽  
High Rate ◽  
Grain Production ◽  
Rice Plants ◽  
West Sumatra ◽  
Npk Fertilizer ◽  
Synthetic Fertilizers

<p align="center"><strong>ABSTRAK</strong></p><p align="center"><strong> </strong></p><p>Tingginya laju pertumbuhan penduduk dan alih fungsi lahan pertanian, menyebabkan perlunya dilakukan upaya untuk meningkatkan produksi beras. Sedangkan produksi yang diperoleh dari lahan pertanian yang ada belum mencapai hasil yang optimal.  Upaya yang perlu dilakukan  untuk meningkatkan produksi padi diantaranya adalah memperbaiki tingkat kesuburan tanah dan metode budidaya tanaman padi.  Penelitian ini bertujuan untuk memperoleh kombinasi yang paling tepat antara bahan  organik kaya sumber hayati (BOKASHI) dan pupuk NPK terhadap produksi padi yang ditanam secara jajar legowo.  penelitian dilakukan di Kecamatan Pulau Punjung Kabupaten Dharmasraya Provinsi Sumatera Barat pada bulan Juli-Desember 2015.  Penelitian menunjukkan bahwa kombinasi bokashi + 75 % pupuk buatan memberikan hasil gabah 6.3 ton/Ha, sementara produksi padi tanpa penambahan bokashi + 100 % pupuk buatan memberikan hasil gabah 3.9 ton/Ha, dengan demikian dapat disimpulkan bahwa penambahan bokashi dapat meningkatkan produksi gabah sebanyak 2.4 ton/Ha.  Penambahan 2 ton/Ha bokashi yang ditanam secara sistem jajar legowo pada tanaman padi berpengaruh nyata terhadap pertumbuhan dan produksi tanaman padi dan dapat mengurangi penggunaan pupuk buatan sebanyak 25 %.</p><p>Kata Kunci : Bokashi, Produksi Padi, Jajar Legowo, Kombinasi</p><p> </p><p align="center">ABSTRACT</p><p align="center"> </p><p>The high rate of population growth and the conversion of agricultural land, causing the need for efforts to increase rice production. While the production obtained from existing agricultural lands yet to achieve optimal results. Efforts should be made to increase the rice production of which is to improve soil fertility and method of rice cultivation. This study aims to obtain the most appropriate combination of organic material rich in biological resources (Bokashi) and NPK fertilizer on rice production are grown Legowo row. Research conducted in the District Pulau Punjung Dharmasraya West Sumatra province in July to December 2015. The study showed that the combination of Bokashi + 75% of artificial fertilizers provide grain yield of 6.3 tonnes / ha, while rice production without adding Bokashi + 100% synthetic fertilizers provide grain yield 3.9 tonnes / ha, thus it can be concluded that the addition of bokashi can increase grain production as much as 2.4 tons / ha. Addition of 2 tons / ha planted Bokashi system Legowo row in rice plants significantly affect the growth and production of rice plants and can reduce the use of artificial fertilizers as much as 25%.</p><p>Keywords: Bokashi, Rice Production, Jajar Legowo, Combination</p>

scholarly journals COMBINING ABILITIES OF GRAIN YIELD AND YIELD RELATED TRAITS IN RELATION TO DROUGHT TOLERANCE IN TEMPERATE MAIZE BREEDING

2015 ◽  
Vol 20 (2) ◽  
Author(s):  
Sekip ERDAL ◽  
Mehmet PAMUKCU ◽  
Ahmet OZTURK ◽  
Köksal AYDINSAKIR ◽  
Suleyman SOYLU
Keyword(s):  
Drought Tolerance ◽  
Grain Yield ◽  
Maize Breeding ◽  
Combining Abilities

scholarly journals Straw and early nitrogen fertilization affect soil properties and upland rice yield

2016 ◽  
Vol 46 (3) ◽  
pp. 284-291 ◽  
Author(s):  
Adriano Stephan Nascente ◽  
Anna Cristina Lanna
Keyword(s):  
Microbial Biomass ◽  
Nitrate Reductase ◽  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Upland Rice ◽  
Microbial Biomass Carbon ◽  
Biomass Carbon ◽  
Early Application ◽  
Total N ◽  
Rice Plants

ABSTRACT The presence of cover crop straw and early application of total N at sowing may provide significant changes in the microbial population, reflecting on the N dynamics in the soil and in upland rice plants. This study aimed at determining the effect of the early application of nitrogen doses as mineral N and microbial biomass carbon in the soil, as well as in the activity of nitrate reductase, and grain yield of upland rice plants cultivated under no-tillage system (NTS). A randomized blocks design, in a split-plot scheme, with four replications, was used. The treatments consisted of N doses (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 and 120 kg ha-1) and the presence or absence of U. brizantha cover straw. Maintaining the straw on the soil surface reduces the ammonium levels and increases the microbial biomass carbon content of the soil. The application of increasing doses of N in the soil provides increases in the levels of nitrate and ammonium in the soil up to 28 days after emergence. The activity of the nitrate reductase enzyme in the plants increases and the contents of ammonium and nitrate in the soil decrease with the crop development. The number of panicles and grain yield of upland rice increase with the increase of the nitrogen fertilization, but decrease in the presence of U. brizantha straw. Thus, it is recommend the use of early N fertilization in upland rice crop.

scholarly journals Effects ofTrichodermaseedling treatment with System of Rice Intensification management and with conventional management of transplanted rice

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e5877 ◽  
Author(s):  
Ram B. Khadka ◽  
Norman Uphoff
Keyword(s):  
Grain Yield ◽  
Market Price ◽  
Crop Management ◽  
Growth And Yield ◽  
Yield Enhancement ◽  
System Of Rice Intensification ◽  
Soil Conditions ◽  
Rice Plants ◽  
Organic Cultivation ◽  
Rice Intensification

Many benefits ofTrichodermainoculation for improving crop production have been documented, including growth and yield enhancement and the alleviation of biotic and abiotic stresses. However, because rice is usually cultivated under continuous flooding that creates anaerobic soil conditions, this limits the benefits of these beneficial fungi. Cultivating rice with the methods of the System of Rice Intensification (SRI) provides rice plants with a more favorable environment for their colonization by beneficial microbes in the soil because the soil is more aerobic under SRI management and contains more organic matter. This study evaluated the effects ofTrichodermainoculation of rice plants under SRI management compared with transplanted and flooded rice plants, considering also the effects of different means of fertilization and different varieties in rice. Experiments were conducted in 2015 and 2016 under the tropical climate of Nepal’s western terai (plains) during both the rainy season (July to November) and the dry season (March to July). The results indicated significantly better performance (P = 0.01) associated withTrichodermainoculation for both seasons and for both systems of crop management in terms of grain yield and other growth-contributing factors, compared to non-inoculated rice cropping. Relatively higher effects on grain yield were recorded also with organic compared to inorganic fertilization; for unimproved (heirloom) varieties compared with improved varieties; and from SRI vs. conventional flooded crop management. The yield increase withTrichodermatreatments across all trials was 31% higher than in untreated plots (4.9 vs 4.5 mt ha−1). WithTrichodermatreatment, yields compared with non-treated plots were 24% higher with organic SRI (6.38 vs 5.13 mt ha−1) and 52% higher with non-organic SRI (6.38 vs 3.53 mt ha−1). With regard to varietal differences, under SRI managementTrichodermainoculation of the improved variety Sukhadhan-3 led to 26% higher yield (6.35 vs 5.04 mt ha−1), and with the heirloom variety Tilkidhan, yield was 41% higher (6.29 vs 4.45 mt ha−1). Economic analysis indicated that expanding the organic cultivation of local landraces under SRI management should be profitable for farmers where such rice has a good market price due to its premium quality and high demand and when SRI enhances yield. These varieties’ present low yields can be significantly increased by integratingTrichodermabio-inoculation with SRI cultural methods. Other recent research has shown that such inoculation can be managed profitably by farmers themselves.

scholarly journals miR2105 regulates ABA biosynthesis via OsbZIP86-OsNCED3 module to contribute to drought tolerance in rice

2021 ◽  
Author(s):  
Weiwei Gao ◽  
Mingkang Li ◽  
Songguang Yang ◽  
Chunzhi Gao ◽  
Yan Su ◽  
...  
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Transgenic Rice ◽  
Crucial Role ◽  
Agronomic Traits ◽  
Stomatal Closure ◽  
Plant Tolerance ◽  
Rice Plants ◽  
Transgenic Rice Plants ◽  
Aba Biosynthesis

AbstractInduced abscisic acid (ABA) biosynthesis plays an important role in plant tolerance to abiotic stresses, including drought, cold and salinity. However, regulation pathway of the ABA biosynthesis in response to stresses is unclear. Here, we identified a rice miRNA, osa-miR2105 (miR2105), which plays a crucial role in ABA biosynthesis under drought stress. Analysis of expression, transgenic rice and cleavage site showed that OsbZIP86 is a target gene of miR2105. Subcellular localization and luciferase activity assays showed that OsbZIP86 is a nuclear transcription factor. In vivo and in vitro analyses showed that OsbZIP86 directly binds to the promoter of OsNCED3, and interacts with OsSAPK10, resulting in enhanced-expression of OsNCED3. Transgenic rice plants with knock-down of miR2105 or overexpression of OsbZIP86 showed higher ABA content, more tolerance to drought, a lower rate of water loss, more stomatal closure than wild type rice ZH11 under drought stress. These rice plants showed no penalty with respect to agronomic traits under normal conditions. By contrast, transgenic rice plants with miR2105 overexpression, OsbZIP86 downregulation, or OsbZIP86 knockout displayed less tolerance to drought stress and other phenotypes. Collectively, our results show that a regulatory network of ‘miR2105-OsSAPK10/OsbZIP86-OsNCED3’ control ABA biosynthesis in response to drought stress.One-sentence summary‘miR2105-OsbZIP86-OsNCED3’ module plays crucial role in mediating ABA biosynthesis to contribute to drought tolerance with no penalty with respect to agronomic traits under normal conditions.

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