Genotypic variation in traditional rice varieties for chlorophyll content, SPAD value and nitrogen use efficiency

Hassan, Mian Sayeed; Khair, Abul; Haque, M. A.; Azad, Abul Kalam; Hamid, Abdul

doi:10.3329/bjar.v34i3.3977

Cited by 23 publications

(18 citation statements)

References 9 publications

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“…As a result, the yield of cultivated local varieties is low. On the other hand, application of N increases grain and straw yield as well as N use efficiency (Hassan et al, 2009). Nitrogen is considered as the most important nutrients in improving rice yields under most agro-ecosystem (Fageria and Santos, 2014).…”

Section: Introductionmentioning

confidence: 99%

Yield and Nitrogen Use Efficiency of Locally Improved Rice Varieties in Rice Based Tidal Flooded Ecosystem of Bangladesh

Mamun

Haque

Khaliq

et al. 2017

Bangladesh Agron. J.

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An on farm field experiment was conducted to evaluate locally improved aman rice varieties in terms of nitrogen use efficiency and grain yield in southern region of Bangladesh. The treatments were: i. deep placement of urea (UDP) before panicle initiation stage and ii. farmers' practice (FP/control). The locally popular rice varieties were used as planting materials. Higher panicles m -2 and grains panicle -1 was obtained from UDP application compared to FP. Nitrogen fertilization increases grain and straw nitrogen content significantly. Application of urea before panicle initiation stage gave considerable higher grain yield in all cultivated varieties. Cultivated aman varieties produced 2.0 to 2.5 t ha -1

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Section: Introductionmentioning

confidence: 99%

Yield and Nitrogen Use Efficiency of Locally Improved Rice Varieties in Rice Based Tidal Flooded Ecosystem of Bangladesh

Mamun

Haque

Khaliq

et al. 2017

Bangladesh Agron. J.

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“…To do this, plants require to enhance their capacity to assimilate inorganic N, which was verified in a previous study where the activity of nitrate reductase was shown to increase in tomato leaves exposed to higher light intensities [31]. Several studies in cereal crops [32][33][34] and muskmelon [35] report a positive correlation between chlorophyll content and NUtE. Our results show no changes in chlorophyll content under different NUE values, in agreement with some reports in grafted Solanaceae crops, such as tomato or bell pepper [36,37].…”

Section: Nue and Developmental Stagementioning

confidence: 91%

Rootstock x Environment Interactions on Nitrogen-Use Efficiency in Grafted Tomato Plants at Different Phenological Stages

et al. 2020

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The use of grafting techniques for horticultural crops increases plant tolerance to various abiotic and biotic stresses. Tomato production under greenhouse conditions relies on plants grafted onto vigorous rootstocks because they sustain crops for longer periods. Growers under Mediterranean conditions usually grow crops in passive greenhouses during the summer and winter season, to provide fresh products throughout the year. No information is available with regard to the effect of the environment on nitrogen-use efficiency (NUE) in tomato plants grafted onto rootstocks with different vigor. In the present study, NUE, along with its components—uptake (NUpE) and utilization (NUtE) efficiencies—were evaluated in tomato plants grafted onto two interspecific rootstocks, conferring medium (“King Kong”) or high (“Kaiser”) vigor to the plants. The evaluations were carried out during the vegetative and reproductive stage in plants subjected to different environmental conditions resulting in different plant growth rates. The grafting treatments did not affect NUE, NUpE or NUtE in young plants, but at the reproductive stage, differences were found during the summer season (high N demand) where the vigorous rootstock increased NUpE from 55%, in non-grafted plants, to 94%, with the consequent differences in NUE. During the winter crop, no differences in NUE were found between the vigorous rootstock and non-grafted plants, but the less vigorous (cold-tolerant) rootstock enhanced NUpE. Significant positive relationships were found between plant growth rate and both NUE and NUpE, while NUtE decreased with increasing growth rate.

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“…The var. Sada mota gave the lowest SPAD value and the highest SPAD value from Kalagura when USG applied at 25 DAT and 80 DAT Hassan et al (2009). reported that SPAD value and nitrogen content showed significant differences under variable nutrient levels and time of urea application.…”

mentioning

confidence: 89%

Growth and Yield Performance of Tidal Local Aman Rice as Influenced by USG Application at Non Tidal Condition

Abedin

Mannan

Mamun

et al. 2015

Bangladesh Agron. J.

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An experiment was carried out at research field of Bangladesh Rice Research Institute, Gazipur to evaluate the performance of tidal local aman rice as influenced by urea super granule (USG) at non-tidal condition. Four tidal local aman varieties such as Sadamota, Razashail, Kutiagoni and Kalagura were used as planting materials. Nitrogen was applied as USG (1.8g) at 10 days after transplanting (DAT), 25 DAT, before panicle initiation (BPI) stage (date of PI stage of these 4 varieties were identified from previous experience) and no nitrogen (control). The experiment was laid out in a splitplot design where varieties in main plot and USG in sub-plot with three replications. Varietals response was significant on plant height, effective tillers hill -1 , grains panicle -1 and grain yield. All the yield and yield components were influenced significantly by the time of USG application. Higher dry matter was produced by all the varieties when USG was applied at early growth stage (10 to 25 DAT) but crop lodges at milking stage due to more vegetative growth resulting increases sterility, decreases grain fertility and yield. On the other hand, when USG was applied at BPI stage grain fertility and yield were increased. The highest grain yield (3.51 t ha -1 ) was recorded from Kalagura when USG applied before panicle initiation stage. So, application of USG at BPI stage in local aman rice in non-tidal condition increased yield resulting higher gross and net return in all varieties.

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Genotypic variation in traditional rice varieties for chlorophyll content, SPAD value and nitrogen use efficiency

Cited by 23 publications

References 9 publications

Yield and Nitrogen Use Efficiency of Locally Improved Rice Varieties in Rice Based Tidal Flooded Ecosystem of Bangladesh

Yield and Nitrogen Use Efficiency of Locally Improved Rice Varieties in Rice Based Tidal Flooded Ecosystem of Bangladesh

Rootstock x Environment Interactions on Nitrogen-Use Efficiency in Grafted Tomato Plants at Different Phenological Stages

Growth and Yield Performance of Tidal Local Aman Rice as Influenced by USG Application at Non Tidal Condition

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