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Study on the Yield and Yield Contributing Characters of Aus Rice Varieties in Various Soil Moisture Levels

Agricultural Sciences 2023年第4期14卷 509-521页

作者： Halima Sayeed Jasmine kamal uddin ahamed Jiban Krishna Biswas Sher-e-Bangla Agricultural Research System (SAURES) Sher-e-Bangla Agricultural University (SAU) Dhaka Bangladesh Department of Agricultural Botany Sher-e-Bangla Agricultural University (SAU) Dhaka Bangladesh Bangladesh Rice Research Institute Gazipur Bangladesh

The experiment was conducted at the Plant Physiology Laboratory (central laboratory) and Shade house of Field Laboratory of Agricultural Botany Department, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh under a field experiment was also carried out on yield contributing parameters. There were three rice genotypes namely BRRI dhan55 (V1), BR6976-2B-15 (V2) and tolerant check Hashikalmi (V3) and seven water stress were imposed as treatments. The treatments were arranged for 0 days of water stress (control) irrigated continuously throughout the experimental period (T0). When the seedlings were 20 days old, water deficit was imposed for seven days (T1), when the seedlings were 35 days old, water deficit was imposed for seven days (T2), when the seedlings were 55 days old, water deficit was imposed for seven days (T3), when the seedlings were 75 days old, water deficit was imposed for seven days (T4). When the seedlings were 95 days old, water deficit was imposed for seven days (T5) and when the seedlings were 115 days old, water deficit was imposed for seven days (T6). BRRI dhan55 and Hashikalmi produced the highest tillers, grains, number of spikelets and yield. The grain sterility percentage is much higher in BR6976-2B-15 due to water stress treatment compared to other genotypes. Grain yield was the highest in BRRI dhan55 and Hashikalmi and gradually decreased with increased water stress treatment compared to other genotypes. Decreased grain yield per plant under water stress treatment reduction of tillers, panicle, filled grains, root, shoot, spikelet/panicle, panicle dry matter content, and with other causes. The harvest index was decreased due to water stress conditions in all the genotypes while less affected in BRRI dhan55 and Hashikalmi.

关键词： Water Stress Rice Genotypes Tiller Spikelet

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Water Stress Effect on Biochemical Processes of Aus Rice Genotypes

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American Journal of Plant Sciences 2022年第6期13卷 912-927页

An experiment was carried out at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from March to July 2014. Plants were grown in the rain-protected polyethylene shelter or shed to avoid rain under natural conditions. The experiment was conducted on biochemical characters of aus rice varieties in various soil moisture levels in three rice genotypes as BRRI dhan55 (V1), BR6976-2B-15 (V2), and tolerant check Hashikalmi (V3), and seven water stress were imposed as treatments. Treatments were 0 days of water stress (control) irrigated continuously throughout the experimental period (T0). From twenty days onwards water stress was imposed for seven days when the age of the seedling was 20 days (T1), 35 days (T2), 55 days (T3), 75 days (T4), 95 days (T5), and 115 days (T6). Our findings suggest that the proline, starch, and sugar content were also found comparatively higher in BRRI dhan55 and Hashikalmi among the genotypes under water stress conditions. Under water stress conditions, proline was accumulated, sugar, and starch were decreased. The soluble sugar content was much lower under water stress conditions due to lower RWC, chlorophyll content, stomatal conductance, and higher leaf rolling. Leaf accumulates anthocyanins under drought conditions and the red color increased as the intensity of water stress increased.

关键词： Water Stress Genotypes Proline Starch and Sugar

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土壤增强剂和肥料对冬稻形态生理性状和产量的影响

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腐植酸 2020年第3期 55-55页

作者： kamal uddin ahamed Saidur Rahman Wadud Faruk 袁晓娜(译) 不详中国腐植酸工业协会

研究土壤增强剂(XXL,由腐植酸、40种不同的微量元素和其他植物激素组成)和肥料对冬稻"Brri Dhan28"形态、生理性状和产量的影响,共设置8个处理:对照,100%推荐剂量的肥料(尿素200 kg/hm^2,重过磷酸钙100 kg/hm^2,氯化钾120 kg/hm^2,石膏7... 详细信息

研究土壤增强剂(XXL,由腐植酸、40种不同的微量元素和其他植物激素组成)和肥料对冬稻"Brri Dhan28"形态、生理性状和产量的影响,共设置8个处理:对照,100%推荐剂量的肥料(尿素200 kg/hm^2,重过磷酸钙100 kg/hm^2,氯化钾120 kg/hm^2,石膏75 kg/hm^2,锌15 kg/hm^2),100%剂量的XXL(1.5L,浓度1.0g/L),100%剂量的X X L+100%推荐剂量的肥料,50%剂量的XXL+50%推荐剂量的肥料,50%剂量的XXL+100%推荐剂量的肥料,100%剂量的XXL+50%推荐剂量的肥料,100%剂量的XXL+75%推荐剂量的肥料。

关键词：生理性状推荐剂量重过磷酸钙增强剂微量元素腐植酸植物激素氯化钾

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