Genotypic variation among 20 rice cultivars/landraces in response to cadmium stress grown locally in West Bengal, India

2020 ◽  
Vol 148 ◽  
pp. 193-206 ◽  
Author(s):  
Falguni Barman ◽  
Snehalata Majumdar ◽  
Shahira Helal Arzoo ◽  
Rita Kundu
Keyword(s):  
West Bengal ◽  
Genotypic Variation ◽  
Cadmium Stress ◽  
Rice Cultivars

scholarly journals Genotypic Variation in Nitrogen Uptake during Early Growth among Rice Cultivars under Different Soil Moisture Regimes

2013 ◽  
Vol 16 (3) ◽  
pp. 238-246 ◽  
Author(s):  
Maya Matsunami ◽  
Toshinori Matsunami ◽  
Kazuhiro Kon ◽  
Atsushi Ogawa ◽  
Ikuko Kodama ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Nitrogen Uptake ◽  
Genotypic Variation ◽  
Early Growth ◽  
Rice Cultivars ◽  
Moisture Regimes

scholarly journals Biofortification of Diverse Basmati Rice Cultivars with Iodine, Selenium, and Zinc by Individual and Cocktail Spray of Micronutrients

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 49
Author(s):  
Asif Naeem ◽  
Muhammad Aslam ◽  
Mumtaz Ahmad ◽  
Muhammad Asif ◽  
Mustafa Atilla Yazici ◽  
...  
Keyword(s):  
Grain Yield ◽  
Foliar Application ◽  
Genotypic Variation ◽  
Foliar Spray ◽  
Brown Rice ◽  
Basmati Rice ◽  
Sodium Selenate ◽  
Human Populations ◽  
Rice Grain ◽  
Rice Cultivars

Given that an effective combined foliar application of iodine (I), selenium (Se), and zinc (Zn) would be farmer friendly, compared to a separate spray of each micronutrient, for the simultaneous biofortification of grain crops, we compared effectiveness of foliar-applied potassium iodate (KIO3, 0.05%), sodium selenate (Na2SeO4, 0.0024%), and zinc sulfate (ZnSO4∙7H2O, 0.5%), separately and in their combination (as cocktail) for the micronutrient biofortification of four Basmati cultivars of rice (Oryza sativa L.). Foliar-applied, each micronutrient or their cocktail did not affect rice grain yield, but grain yield varied significantly among rice cultivars. Irrespective of foliar treatments, the brown rice of cv. Super Basmati and cv. Kisan Basmati had substantially higher concentration of micronutrients than cv. Basmati-515 and cv. Chenab Basmati. With foliar-applied KIO3, alone or in cocktail, the I concentration in brown rice increased from 12 to 186 µg kg−1. The average I concentration in brown rice with foliar-applied KIO3 or cocktail was 126 μg kg−1 in cv. Basmati-515, 160 μg kg−1 in cv. Chenab Basmati, 153 μg kg−1 in cv. Kisan Basmati, and 306 μg kg−1 in cv. Super Basmati. Selenium concentration in brown rice increased from 54 to 760 µg kg−1, with foliar-applied Na2SeO4 individually and in cocktail, respectively. The inherent Zn concentration in rice cultivars ranged between 14 and 19 mg kg−1 and increased by 5–6 mg Zn per kg grains by foliar application of ZnSO4∙7H2O and cocktail. The results also showed the existence of genotypic variation in response to foliar spray of micronutrients and demonstrated that a foliar-applied cocktail of I, Se, and Zn could be an effective strategy for the simultaneous biofortification of rice grains with these micronutrients to address the hidden hunger problem in human populations.

scholarly journals Genotypic variation in cold tolerance of 18 Ethiopian rice cultivars in relation to their reproductive morphology

2021 ◽  
Vol 262 ◽  
pp. 108042
Author(s):  
Habtamu Assega Alemayehu ◽  
Gibrilla Dumbuya ◽  
Mehedi Hasan ◽  
Tilahun Tadesse ◽  
Shinsuke Nakajyo ◽  
...  
Keyword(s):  
Cold Tolerance ◽  
Genotypic Variation ◽  
Rice Cultivars ◽  
Reproductive Morphology

scholarly journals Establishment of Alternative Season for Cultivation of Photoperiod-Sensitive Traditional Rice Cultivars

2021 ◽  
pp. 93-107
Author(s):  
Monish Roy ◽  
Bidhan Roy
Keyword(s):  
West Bengal ◽  
Block Design ◽  
Row Spacing ◽  
Rice Cultivars ◽  
Plant Spacing ◽  
Agronomic Practices ◽  
Randomized Block Design ◽  
Insignificant Difference ◽  
Traditional Cultivars ◽  
Photoperiod Sensitive

Aims: To find out the suitable time for cultivating the photoperiod-sensitive rice cultivars during off-season. Study Design:  Randomized Block Design. Place and Duration of Study: University Research Farm, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar 736165, West Bengal, India. Experiments were conducted during Boro 2017 and Kharif 2018. Methodology: Forty nine cultivars were sown in seed beds on 28th November, 2017 for cultivation of the Boro crop and sowing was done on 30th June, 2018 for cultivation of Kharif crop. Seedlings were transplanted in randomized block design with two replications. Row to row spacing was 30 cm and plant to plant spacing was 20 cm. Standard agronomic practices compatible to the humid tropic of Terai Zone were practiced. Ten random plants from each plot were selected for recording data. Observations were recorded on yield and yield attributing parameters. Results: High significant variation was observed for all the characters under study indicating the presence of high variability among the selected cultivars. Only the test weight between the two seasons had insignificant difference representing that there was no effect of seasons on this character. Time of sowing was standardized for sowing of the traditional cultivars in alternative season- Boro. The yield ranged from 0.35 t/ha to 2.68 t/ha during Boro and from 2.67 t/ha to 8.48 t/ha during Kharif. Ronga Komal (2.68 t/ha), Kauka (2.65 t/ha), Jaldhyapa (2.54 t/ha), Chakhao Angangbi (2.07 t/ha), Kaloboichi (1.87 t/ha), Kalturey (1.85 t/ha), Chakhao-Selection-2 (1.59 t/ha), Chakhao-Selection-1 (1.46 t/ha), Chakhao Sempak (1.43 t/ha) and Chakhao-Selection-3 (1.42 t/ha) performed well during Boro season. Conclusion: Ronga Komal, Kauka, Jaldhyapa, Chakhao Angangbi, Kaloboichi, Kalturey, Chakhao-Selection-2, Chakhao-Selection-1, Chakhao Sempak and Chakhao-Selection-3 performed well during Boro season. Consequently, those above varieties may be recommended for cultivation during Boro season.

scholarly journals Genotypic Variation in Nickel Accumulation and Translocation and Its Relationships with Silicon, Phosphorus, Iron, and Manganese among 72 Major Rice Cultivars from Jiangsu Province, China

2019 ◽  
Vol 16 (18) ◽  
pp. 3281
Author(s):  
Ya Wang ◽  
Chengqiao Shi ◽  
Kang Lv ◽  
Youqing Li ◽  
Jinjin Cheng ◽  
...  
Keyword(s):  
Genotypic Variation ◽  
Jiangsu Province ◽  
Rice Cultivars ◽  
Phosphorus Iron ◽  
Nickel Accumulation ◽  
Translocation Factors ◽  
Hydroponic Conditions ◽  
Ni Accumulation ◽  
Uptake And Transport ◽  
Iron And Manganese

Nickel (Ni) is a ubiquitous environmental toxicant and carcinogen, and rice is a major dietary source of Ni for the Chinese population. Recently, strategies to decrease Ni accumulation in rice have received considerable attention. This study investigated the variation in Ni accumulation and translocation, and also multi-element (silicon (Si), phosphorus (P), iron (Fe), and manganese (Mn)) uptake and transport among 72 rice cultivars from Jiangsu Province, China, that were grown under hydroponic conditions. Our results showed a 2.2-, 4.2-, and 5.3-fold variation in shoot Ni concentrations, root Ni concentrations, and translocation factors (TFs) among cultivars, respectively. This suggests that Ni accumulation and translocation are significantly influenced by the genotypes of the different rice cultivars. Redundancy analysis of the 72 cultivars revealed that the uptake and transport of Ni were more similar to those of Si and Fe than to those of P and Mn. The Ni TFs of high-Ni cultivars were significantly greater than those of low-Ni cultivars (p < 0.001). However, there were no significant differences in root Ni concentrations of low-Ni and high-Ni cultivars, suggesting that high-Ni cultivars could translocate Ni to shoots more effectively than low-Ni cultivars. In addition, the cultivars HD8 and YD8 exhibited significantly lower levels of Ni accumulation than their parents (p < 0.05). Our results suggest that breeding can be an effective strategy for mitigating excessive Ni accumulation in rice grown in Ni-contaminated environments.

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