scholarly journals Evaluation of the Seedling Growth Characteristics of Rice Varieties Direct Seeded under Submerged Conditions in Cold Climate Areas

2012 ◽  
Vol 81 (1) ◽  
pp. 10-17
Author(s):  
Masami Furuhata ◽  
Tadashi Chosa ◽  
Akihiro Ohsumi ◽  
Osamu Matsumura
Keyword(s):  
Seedling Growth ◽  
Growth Characteristics ◽  
Cold Climate ◽  
Rice Varieties ◽  
Direct Seeded ◽  
Submerged Conditions

scholarly journals Genetic Mapping by Sequencing More Precisely Detects Loci Responsible for Anaerobic Germination Tolerance in Rice

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 705
Author(s):  
John Carlos I. Ignacio ◽  
Maricris Zaidem ◽  
Carlos Casal ◽  
Shalabh Dixit ◽  
Tobias Kretzschmar ◽  
...  
Keyword(s):  
Genetic Basis ◽  
Snp Markers ◽  
Nucleotide Polymorphism ◽  
Rice Varieties ◽  
Single Nucleotide ◽  
Genotyping Platform ◽  
Anaerobic Germination ◽  
Direct Seeded ◽  
Mapping By Sequencing ◽  
Simple Sequence

Direct seeded rice (DSR) is a mainstay for planting rice in the Americas, and it is rapidly becoming more popular in Asia. It is essential to develop rice varieties that are suitable for this type of production system. ASD1, a landrace from India, possesses several traits desirable for direct-seeded fields, including tolerance to anaerobic germination (AG). To map the genetic basis of its tolerance, we examined a population of 200 F2:3 families derived from a cross between IR64 and ASD1 using the restriction site-associated DNA sequencing (RAD-seq) technology. This genotyping platform enabled the identification of 1921 single nucleotide polymorphism (SNP) markers to construct a high-resolution genetic linkage map with an average interval of 0.9 cM. Two significant quantitative trait loci (QTLs) were detected on chromosomes 7 and 9, qAG7 and qAG9, with LOD scores of 7.1 and 15.0 and R2 values of 15.1 and 29.4, respectively. Here, we obtained more precise locations of the QTLs than traditional simple sequence repeat and low-density SNP genotyping methods and may help further dissect the genetic factors of these QTLs.

scholarly journals Grain Yield of Hybrid Rice Varieties as Influenced by Seed Rates under Aerobic Direct Seeded Situation

2018 ◽  
Vol 7 (10) ◽  
pp. 2839-2845
Author(s):  
K. Jana ◽  
K. Mondal ◽  
S. Banerjee ◽  
S. Goswami ◽  
R. Mandal ◽  
...  
Keyword(s):  
Grain Yield ◽  
Hybrid Rice ◽  
Rice Varieties ◽  
Direct Seeded

Seedling Growth Characteristics of 24 Provenances of Larix principis-rupprechtii

2014 ◽  
Vol 1073-1076 ◽  
pp. 1099-1103
Author(s):  
Guo Jun Zhang ◽  
Cheng He Wang ◽  
Min Hua Zhao ◽  
Wan Qi Wang ◽  
Jun Ming Yang
Keyword(s):  
Seedling Growth ◽  
Root Length ◽  
Growth Traits ◽  
Comprehensive Evaluation ◽  
Correlation Coefficients ◽  
Growth Characteristics ◽  
Fresh Weight ◽  
Basal Diameter ◽  
Membership Value

Seedling growth traits of 24 provenances of Larix principis-rupprechtii were analyzed to select superior provenances. Variance and correlation on height, basal diameter, root length, root and stem fresh weight of 1-year old and 2-year old seedlings of those provenances were analyzed. Then correlation coefficients between these growth traits and membership value of height and basal diameter of 24 provenances were carried on. Results showed that variance on growth traits of 1-year old seedlings among 24 provenances were only significant for height, but for basal diameter, height, root and stem fresh weight of 2-year old seedlings. Based on correlation coefficients between growth traits, height and basal diameter were selected for comprehensive evaluation. The top 5 provenances of Larix principis-rupprechtii were Neimeng Balinzuo, Hebei Weichang 1-21, 7-46, 8-75, and Beijing, according to average of membership value of height and basal diameter.

scholarly journals Traits and QTLs for development of dry direct-seeded rainfed rice varieties

2014 ◽  
Vol 66 (1) ◽  
pp. 225-244 ◽  
Author(s):  
Nitika Sandhu ◽  
Rolando O. Torres ◽  
Ma. Teresa Sta Cruz ◽  
Paul Cornelio Maturan ◽  
Rajinder Jain ◽  
...  
Keyword(s):  
Rice Varieties ◽  
Rainfed Rice ◽  
Direct Seeded

Towards the development of dry direct seeded rice varieties by stacking of multiple QTLs/genes

2018 ◽  
Vol 55 (spl) ◽  
pp. 51 ◽  
Author(s):  
A Anandan ◽  
C Parameswaran ◽  
TP Muhammed Azharudheen ◽  
ON Singh
Keyword(s):  
Rice Varieties ◽  
Direct Seeded

Seed priming in dry direct-seeded rice: consequences for emergence, seedling growth and associated metabolic events under drought stress

2015 ◽  
Vol 78 (2) ◽  
pp. 167-178 ◽  
Author(s):  
Manman Zheng ◽  
Ye Tao ◽  
Saddam Hussain ◽  
Qingwei Jiang ◽  
Shaobing Peng ◽  
...  
Keyword(s):  
Drought Stress ◽  
Seedling Growth ◽  
Seed Priming ◽  
Direct Seeded

scholarly journals Response of Drought Tolerant Rice (Oryza sativa L.) Varieties under Various Methods of Establishment in Drought-prone Condition of Bihar

2019 ◽  
pp. 1-6
Author(s):  
Rajeev Singh ◽  
Ravi Ranjan Kumar ◽  
Nityanand . ◽  
R. K. Sohane ◽  
Anjani Kumar Singh ◽  
...  
Keyword(s):  
Oryza Sativa L ◽  
Cost Ratio ◽  
Rice Varieties ◽  
Yield Attributes ◽  
Net Return ◽  
Benefit Cost Ratio ◽  
Transplanted Rice ◽  
Drought Tolerant ◽  
Direct Seeded ◽  
Benefit Cost

A field experiment was conducted at Krishi Vigyan Kendra, Aurangabad and in farmers’ field during rainy seasons of 2013, 2014 and 2015, to Performance of drought tolerant rice varieties under various methods of stand establishment in rainfed drought-prone condition of Bihar. Experiment was laid out in a split-plot design with 3 methods of establishment i.e. broad coasting, direct seeded rice (DSR), and transplanted rice (TPR), and two varieties viz. Sahbhagiedhan, SushkeSamrat in a total of 5 replications including four at KVK, Aurangabad and one at farmers’ field during three years. Direct seeding of rice (DSR) with ZTD machine produced significantly higher plant height, number of tillers/m2, panicles/m2, grains/panicle, filled grains/panicle. However panicle length and Panicle weight were recorded maximum with   to transplanting method over Direct seeded rice with ZTD machine and broad coasting. 1000grain weight was recorded significantly maximum with Direct seeded rice with ZTD machine and transplantinh over broad coasting. Direct seed produced 7.60% and 30.95% more yield in 2014, 7.88% and 32.10% more yield in 2014 and 12.00% and 30.23% more yield in 2016 over transplanted and broad coasting rice, respectively. Net return and benefit-cost ratio were also significantly higher in direct seeded rice with ZTD machine than transplanted rice and broad coasting of rice. Amongst the varieties of rice, Sushk Samrat produced significantly higher yield attributes viz., tillers/m2, panicles/m2, grains/panicle, filled grains/panicle and 1000-grain weight, and subsequently produced grain yield higher by 13.42 in 2014, 10.10% in 2015 and by 7.03% in 2016 over Sahbhagie dhan. Net return and benefit-cost ratio were also recorded significantly higher with Sushk Samrat than Sahbhagiedhan.

scholarly journals Yield Response of Direct Seeded <i>Aus</i> Rice Varieties under Rainfed Condition

2018 ◽  
Vol 09 (03) ◽  
pp. 416-434
Author(s):  
Uttam Kumar Ghosh ◽  
Md. Arifur Rahman Khan ◽  
M Abdul Karim ◽  
Md Anamul Haque
Keyword(s):  
Yield Response ◽  
Rice Varieties ◽  
Rainfed Condition ◽  
Direct Seeded
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