Adaptability Trial of Hybrid and Inbred Rice Varieties under Corona Clayloam Condition

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
Maria P. Lasim ◽  
Virginia P. Oanzon ◽  
Minerva J. Hubilla ◽  
Magdalena M. Ocbian ◽  
Miguel G. Guarin ◽  
...  
Keyword(s):  
Hybrid Rice ◽  
Rice Variety ◽  
The Other ◽  
Rice Cultivars ◽  
Clay Loam ◽  
Wet Season ◽  
Rice Varieties ◽  
State College ◽  
Morphologic Characteristics ◽  
Hybrid Variety

This study was done in one of the ricefields of Sorsogon State College Castilla Campus at Mayon, Castilla, and Sorsogon to determine the best rice varieties adaptable in a location specific lowland ricefield specifically under Corona clay loam condition. This experiment also evaluated and characterized the agronomic or morphologic traits of rice cultivars in farmers’ field and identified the most productive and promising rice cultivars. Results of morphologic characteristics of the five varieties tested showed that for plant height NSIC Rc 222 was the tallest for wet season (WS) and NSIC Rc 212 and NSIC Rc 214 for dry season (DS). PhB71 performed just as well as NSIC Rc 214. Same variety got the highest productive tillers in both seasons and differed significantly over the four inbred varieties. NSIC Rc 222 exhibited the highest number of filled grains per panicle. This is significantly different from the other varieties. Only NSIC RC 214 gave a significantly higher weight for 1,000 grains per replication than the other varieties for both seasons. PhB 71 had the highest yield performance during the wet season and is significantly different with the other inbred varieties. It is concluded that the hybrid (PhB 71) and the inbred rice variety NSIC Rc214 were adaptable under corona clayloam condition in both seasons. Among the inbred rice varietiestested, NSIC Rc214 was found to be the most productive and promising variety in terms of yield. The hybrid variety (PhB71) is more productive than any of the inbred varieties under this present study.   Keywords - hybrid rice varieties, inbred rice, corona clayloan

scholarly journals Rajdeep (IET 17713): A New Rainfed Lowland High Yielding Rice Variety for Semideep Situation

2021 ◽  
Author(s):  
Indrani Dana ◽  
Sitesh Chatterjee
Keyword(s):  
West Bengal ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
National Level ◽  
Stem Borer ◽  
Research Station ◽  
Wet Season ◽  
Rice Varieties ◽  
Improvement Project

In eastern India, more than 13.0 million ha of rice lands are affected by excess water and periodically suffer from flash floods and complete submergence. Most of the traditional and adapted rice varieties of this situation are low yielders. To overcome these problems the high yielding rice variety (HYV), Rajdeep (IET 17713) has been developed by Rice Research Station, Government of West Bengal, Chinsurah, Hooghly as high yielding rice variety for semideep water situation. Field experiment was conducted to evaluate the performance of promising semideep water rice (Oryza sativa L.) genotypes under lowland situation during wet season of 2002-2013. Performance of Rajdeep, semideep water rice was better and therefore it was released. It is tolerant to sheath blight, sheath rot diseases and stem borer, leaf folder insect-pests. The high yielding semideep rice variety, Rajdeep exhibited superiority over national check (Sabita), regional check (Purnendu) and local check tested in different locations under All India Coordinated Rice Improvement Project (AICRIP) trials during kharif, 2002-2003 conducted by ICAR-Indian Institute of Rice Research, Hyderabed, India. This variety was also tested in multi-locational yield trials (2003-2013) along with check variety Swarna-Sub 1/ Bhudeb at different locations of West Bengal. After testing at national level as well as at state level, based on yield performance of the variety, the HYV semideep rice variety Rajdeep was released and notified by Government of India in the Gazette of India vide Notification No. S.O. 1007(E) on 30th March, 2017.

scholarly journals Diffusion of Wet Season (T. Aman) Rice Cultivars under Changed Environment in Northwest Bangladesh

2020 ◽  
Vol 23 (1) ◽  
pp. 81-106
Author(s):  
M J Kabir ◽  
M A Islam ◽  
M C Rahman ◽  
M S Rahaman ◽  
M S Kabir ◽  
...  
Keyword(s):  
Cropping Systems ◽  
Group Discussion ◽  
Moisture Stress ◽  
Yield Potential ◽  
Northwestern Part ◽  
Rice Cultivars ◽  
Market Demand ◽  
Wet Season ◽  
Rice Varieties ◽  
Structured Questionnaire

Northwestern part of Bangladesh plays an important role to supply rice for national food security. However, wet season (WS) rice cultivation in the area is highly vulnerable to moisture stress and severe pest infestation. Therefore, it is very much important to evaluate the adoption situation of wet season rice cultivars and their drivers and drawbacks of adoption in order to delineate the possible ways of rapid dissemination of modern rice varieties to cope with the existing vulnerability and minimize yield gap. Two important wet season rice-growing districts, namely Rangpur and Dinajpur were selected purposively for the study. Focus group discussion (FGD) and key informant interview (KII) were conducted using semi-structured questionnaire to gather qualitative and quantitative data for the study. In addition, structured questionnaire was used in the FGD for generating data on input use patterns, outputs and seasonal variability of yield and price of different rice cultivars for estimating costs and returns. The findings of the study reveal that farmers mainly adopted exotic WS rice cultivars to reduce unexpected yield loss due to abiotic and biotic stresses. Diffusion status of exotic cultivars was ranged between 76-85% of total WS rice area in the study locations. The drivers of widespread diffusion of exotic cultivars are stability in yield performance, compatibility to fit into local cropping systems, potentiality to recover from biotic and abiotic stresses and ensured market demand. However, farmers are dreaming for higher yield potential and more stress tolerant cultivars for fitting into two and three crops-based systems in the areas. Rice breeders may use the findings of this study to develop and disseminate suitable rice cultivars for the northwestern part of the country. Bangladesh Rice j. 2019, 23(1): 81-106

scholarly journals Pengaruh Pupuk Kandang dan Kesesuaian Varietas-Musim Tanam terhadap Hasil Padi Sawah

2014 ◽  
Vol 33 (3) ◽  
pp. 177
Author(s):  
Gagad Restu Pratiwi ◽  
Sumarno Sumarno
Keyword(s):  
Grain Yield ◽  
Organic Fertilizer ◽  
Rice Variety ◽  
Brown Planthopper ◽  
Production Capacity ◽  
Residual Effect ◽  
Wet Season ◽  
Rice Varieties ◽  
Significant Interaction Effect ◽  
Manure Treatment

Adaptive variety and organic fertilizer are important components for rice cultural practices in a spesific agroecology. The research objectives were (1) to clarify the direct and the residual effect of manure on grain yield of rice, (2) to identify rice varieties most suitable for dry and for wet season planting. The research was conducted at Sukamandi Exp. Farm, West Java, during dry season (DS) of 2010 and wet season (WS) of 2010/2011, using a split-plot design with three replications. The main plots of DS experiment consisted of (1) recommended dosage of NPK (115 kg N + 50 kg P2O5 + 50 kg K2O/ha) and (2) 80% dosage of NPK + 5 t manure/ha. The WS experiment, main plots were (1) recommended NPK and (2) the residue of manure given in DS + 80% of the NPK. The subplots were fifteen improved varieties, each planted on plot 3.4 m x 5.4 m with 20 cm x 20 cm plant spacing. Data were collected for agronomic variables and grain yield. The DS 2010 experiment was attacked by brown planthopper (BPH), only two varieties, Inpari-8 and Inpari-13 were resistant, each yielded around 6 t/ha, while thirteen varieties were susceptible, yielded between 0.14 t to 3.9 t/ha. Application of 5 t manure/ha increased the averaged of biomass and grain yields by 9% and 10%, respectively, but were not consistent among varieties. In WS 2010/2011 experiment, the residual manure + 80% NPK decreased the averaged grain yield, but there was a significant interaction effect between fertilizer x variety. Seven varieties yielded less, six varieties yielded similar, and two varieties yielded more on the residual manure treatment, compared to that on no-manure treatment. Biomass weight, plant height, days to flowering, and days to harvesting, each was significantly correlated with grain yield. Five varieties were identified as suitable for WS planting, namely: Inpari-3, Inpari-10, Inpari-7, Ciherang, and Mekongga. When outbreak of BPH was suspected in the DS, Inpari-8 and Inpari-13 were suggested for planting. Suitable variety(ies) for season specific planting would optimize productivity, conversely, planting of unsuitable rice variety, during either DS or WS planting, would decreased the land production capacity.

A rice gene that confers broad-spectrum resistance to β-triketone herbicides

Science ◽  
2019 ◽  
Vol 365 (6451) ◽  
pp. 393-396 ◽  
Author(s):  
Hideo Maeda ◽  
Kazumasa Murata ◽  
Nozomi Sakuma ◽  
Satomi Takei ◽  
Akihiko Yamazaki ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Broad Spectrum ◽  
Rice Variety ◽  
Rice Cultivars ◽  
Rice Gene ◽  
Rice Varieties ◽  
Herbicide Resistant ◽  
Broad Spectrum Resistance ◽  
Varietal Improvement ◽  
Triketone Herbicides

The genetic variation of rice cultivars provides a resource for further varietal improvement through breeding. Some rice varieties are sensitive to benzobicyclon (BBC), a β-triketone herbicide that inhibits 4-hydroxyphenylpyruvate dioxygenase (HPPD). Here we identify a rice gene, HIS1 (HPPD INHIBITOR SENSITIVE 1), that confers resistance to BBC and other β-triketone herbicides. We show that HIS1 encodes an Fe(II)/2-oxoglutarate–dependent oxygenase that detoxifies β-triketone herbicides by catalyzing their hydroxylation. Genealogy analysis revealed that BBC-sensitive rice variants inherited a dysfunctional his1 allele from an indica rice variety. Forced expression of HIS1 in Arabidopsis conferred resistance not only to BBC but also to four additional β-triketone herbicides. HIS1 may prove useful for breeding herbicide-resistant crops.

scholarly journals Development of Drought Tolerant Rice Variety BRRI dhan66 for Rainfed Lowland Ecosystem of Bangladesh

2020 ◽  
Vol 23 (1) ◽  
pp. 45-55
Author(s):  
M A Kader ◽  
T L Aditya ◽  
R R Majumder ◽  
T K Hore ◽  
A K M Shalahuddin ◽  
...  
Keyword(s):  
Flag Leaf ◽  
Rice Variety ◽  
Economic Loss ◽  
Reproductive Stage ◽  
Wet Season ◽  
Rice Varieties ◽  
Commercial Cultivation ◽  
Drought Tolerant ◽  
Rainfed Lowland ◽  
Prone Area

A newly released drought tolerant rice variety BRRI dhan66 suitable for rainfed lowland ecosystem of Bangladesh is an improvement over existing drought tolerant rice varieties. The variety has satisfactorily been passed in the proposed variety trial conducted in the farmers’ field. As a result, National Seed Board (NSB) approved this variety for commercial cultivation in the wet season (T. Aman) in 2014. It has modern plant type with 120 cm plant height and matures in 110-115 days. The important feature of this variety is higher drought tolerance during reproductive stage. It can produce 4.5-5.0 t/ha grain yield without irrigation during reproductive stage. It can produce satisfactory yield when soil moisture remains <20% and perch water table depth is more than 70-80 cm from the surface. The seed size of the variety is 24 g with intermediate long bold grain. It has long, wide and erect flag leaf with deep green colour. It is highly promising as a drought tolerant rice variety for cultivation in the drought prone area, which helps farmers’ to get rid of huge economic loss and is contributing in sustaining food security. Bangladesh Rice j. 2019, 23(1): 45-55

scholarly journals Vis/NIR reflectance spectroscopy for hybrid rice variety identification and chlorophyll content evaluation for different nitrogen fertilizer levels

2019 ◽  
Vol 6 (10) ◽  
pp. 191132 ◽  
Author(s):  
Hao Zhang ◽  
Zheng Duan ◽  
Yiyun Li ◽  
Guangyu Zhao ◽  
Shiming Zhu ◽  
...  
Keyword(s):  
Chlorophyll Content ◽  
Nitrogen Fertilizer ◽  
Hybrid Rice ◽  
Rice Variety ◽  
Reflectance Spectroscopy ◽  
Partial Least Square ◽  
Nitrogen Level ◽  
Rice Varieties ◽  
Nitrogen Levels ◽  
Nir Reflectance Spectroscopy

Nitrogen is one of the most important nutrient indicators for the growth of crops, and is closely related to the chlorophyll content of leaves and thus influences the photosynthetic ability of the crops. In this study, five hybrid rice varieties were cultivated during one entire growing period in one experimental field supplied with six nitrogen fertilizer levels. Visible and near infrared (vis/NIR) reflectance spectroscopy combined with multivariate analysis was used to identify hybrid rice varieties and nitrogen fertilizer levels, as well as to detect chlorophyll content associated with nitrogen levels. The support vector machine (SVM) algorithm was applied to identify five varieties of hybrid rice and six levels of nitrogen fertilizer. The results demonstrated that different varieties of hybrid rice for each nitrogen level can be well distinguished except for the highest nitrogen level, and no nitrogen level for each rice variety can be completely identified from the other five nitrogen levels. Further, 12 spectral indices combined with partial least square (PLS) analysis were applied for estimating chlorophyll content of rice leaves from plants subjected to different nitrogen levels, and a root mean square error of cross-validation (RMSECV) of 0.506, a coefficient of determination ( R 2 ) of 97.8% and a ratio of performance to deviation (RPD) of 4.6 for all rice varieties indicated this as a preferable procedure. This study demonstrates that Vis/NIR spectroscopy can have a great potential for identification of rice varieties and evaluation of nitrogen fertilizer levels.

scholarly journals Distinguishing Rice Genotypes using Morphological, Agronomical,

2015 ◽  
Vol 34 (2) ◽  
pp. 79 ◽  
Author(s):  
Untung Susanto ◽  
Nofi Anisatun Rohmah ◽  
Made Jana Mejaya
Keyword(s):  
Ssr Markers ◽  
Block Design ◽  
Rice Variety ◽  
Morphological Characters ◽  
Snp Markers ◽  
Complete Data ◽  
Property Right ◽  
Wet Season ◽  
Rice Varieties ◽  
Rice Genotypes

<p align="LEFT">Complete data on characteristics of a rice variety is very important to  race the authenticity of the variety at the field. Sometimes a name of a variety had changed, due to the informal  seed distribution among farmers. This could become problem in the property right of the variety. Distinguishing among rice varieties using only morphological and agronomical traits are sometimes not sufficient. Currently, molecular markers such as SSR (Simple Sequence Repeats) and SNP (Single Nucleotide Polymorphism) markers have become available and are powerfull to distinguish rice genotypes. This research was aimed to distinguish nine rice varieties grown by farmers, using morphological characters (47 traits), agronomical characters (9 traits), SSR markers (12 primer pairs, related with important traits of rice plant), and 384 SNP markers, and to compare the effectiveness of each technique in distinguishing among genotypes. A field experiment was conducted in Ranca Jaya village, Patok Beusi, Subang, West Java during Wet Season (WS) of 2011/2012, using a Randomized Complete Block Design in three replications. A modified CTAB method was used to extract DNA for detection using 12 SSR markers and 384 SNP markers. The results revealed that the use of SSR markers that were linked to certain genes was more accurate than that of the SNP markers, agronomic, and morphological characters, in distinguishing differences among the 9 rice genotypes. The complete data of morphologic, agronomic, and molecular are useful to distinguish the authenticity of a variety in order to protect the intelectual property right attached on the variety.</p>

scholarly journals Effect of Planting Density on the Performance of Hybrid Rice (Oryza sativa L.) under Waterlogged Condition

2014 ◽  
Vol 11 (2) ◽  
pp. 109-113 ◽  
Author(s):  
MS Islam ◽  
MM Rashid ◽  
MK Mondal ◽  
SC Nath ◽  
MR Karim
Keyword(s):  
Hybrid Rice ◽  
Agricultural Research ◽  
Oryza Sativa L ◽  
Block Design ◽  
Rice Variety ◽  
Planting Density ◽  
Wet Season ◽  
Waterlogged Condition ◽  
Agricultural Research And Development ◽  
Development Center

The experiment was conducted to find out the effect of planting density on the performance of hybrid rice variety Aloran under water logged condition at the BRAC Agricultural Research and Development Center in Gazipur, Bangladesh during the dry (DS) and wet season (WS) of 2009. Different planting densities were maintained using different spacings and number of seedlings per hill. These include 25 cm × 20 cm, 25 cm × 10 cm, 20 cm × 10 cm, 20 cm × 15 cm with single seedling per hill and 20 cm × 15 cm with two seedlings per hill and 20 cm × 15 cm with three seedlings per hill. The experiment was laid out in a randomized complete block design with 3 replications. Density of 20 cm × 10 cm with 1 seedling hill-1 i.e. 50 hills m-2 produced the highest grain yield of 7.5 t ha-1 and 4.6 t ha-1 in DS and WS respectively, which was significantly higher than the yield with recommended density (20 cm × 15 cm with 1 seedling per hill). This yield was increased due to higher number of panicles m-2. Increasing the seedling numbers hill-1 with the recommended planting density did not improve the yield of hybrid rice. This result suggests that higher planting density rather than increased number of seedling hill-1 is necessary for getting higher yield of hybrid rice in continuous water logged condition. DOI: http://dx.doi.org/10.3329/agric.v11i2.17497 The Agriculturists 2013; 11(2) 109-113

scholarly journals Effects of Interaction between New Rice Varieties and Plant Spacing to Productivity of Rice

2016 ◽  
Vol 24 (2) ◽  
pp. 245
Author(s):  
Ikhwani -
Keyword(s):  
Rice Variety ◽  
Growth Characteristic ◽  
The Other ◽  
Medium Size ◽  
Plant Spacing ◽  
Rice Varieties ◽  
Rice Productivity ◽  
Central Java ◽  
Rice Yields ◽  
Equal Spacing

The most effective method to increase rice productivity in one location is to adapt the best combination between the high yielding rice variety and the optimum plant spacing. The objectives of this experiment to observe plant growth characteristic of each high yielding rice variety under each plant spacing to increase rice productivity. Field experiment was conducted at Toroh Regency, Grobogan District, Central Java during 2014 dry season. Treatments were arranged according to a split plot design, with three replications. The main plots (Plant spacings), namely T1- Equal spacing/Tegel 25 cm x 25 cm; T2- Legowo 2:1 (25---50) cm x 12,5 cm; T3- legowo 4:1 empty (25 – 50) cm x 12,5 cm dan T4- legowo 4:1 full (25 – 50) cm x 12,5 cm. The sub plots (variety): Ciherang, Inpari 10, Inpari 15 and Inpari 16.<br />The yields of the rice varieties in this experiment are highly significantly different. It was found one introduced variety produced higher yield than Ciherang, namely Inpari 16 (5.93 + 0.43 ton 14% dry grain/ha). The two other introduced varieties (Inpari 10 and Inpari 15), produced 5.03 + 0.19 and 5.00 + 0.22 ton 14% dry grain/ha, the same or slightly lower than Ciherang. The highest yield occurred when Inpari 16 planted using Legowo 4 : 1 empty, namely 6.57 ton 14% dry grain/ha, consistently produces higher yield than the other varieties do at each plant spacing treatment. Rice yields of Ciherang were relatively more stable under different plant spacings compared with the other varieties. Inpari 10 at harvest stage having 19 tillers per hill under equal spacing 25 cm x 25 cm, decreased to 12 tillers per hill under Legowo 4 : 1 full. Ciherang with the medium size of grains have 1000 grain weight of 23.9 gram, and Inpari 10 25.3 gram. Based on the results of this experiment it is concluded that Inpari 16 planted under Jajar Legowo 4 : 1 empty (25 – 50) cm x 12.5 cm is the best. However, it is suggested to be evaluated acceptability by the local farmers.

scholarly journals Effect of nitrogen on growth and yield of short duration transplanted inbred and hybrid rice varieties

2020 ◽  
Vol 5 (3) ◽  
pp. 41
Author(s):  
Md. Moshiur Rahman ◽  
Eshita Yasmin
Keyword(s):  
Short Duration ◽  
Rainy Season ◽  
Hybrid Rice ◽  
Growth And Yield ◽  
Optimum Dose ◽  
Nitrogen Rate ◽  
Rice Varieties ◽  
Nitrogen Levels ◽  
Hybrid Variety ◽  
Plot Design

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during June to December 2015 with a view to finding out the effect of nitrogen levels on the yield performance of short duration inbred and hybrid transplant rainy season rice varieties. Four short duration rice varieties (three inbred viz. BINA dhan7, BRRI dhan39, BRRI dhan56 and one hybrid Dhanigold), and 5 levels of nitrogen viz. 0, 40, 80, 120 and 160 kg N ha-1 were included in the experiment under a split–plot design with three replications. The result revealed that variety, nitrogen rate and their interactions had significant on grain yield of short duration transplant rainy season rice. Hybrid variety Dhanigold gave the highest yield (5.13 t ha-1) followed by BRRI dhan56 (4.80 t ha-1) while the lowest was produced by Binadhan-7 (4.28 t ha-1). The highest yield (5.93 t ha-1) was obtained from Dhanigold with 120 kg N ha-1 which was followed by BRRI dhan56 at 120 kg N ha-1 (5.42 t ha-1). The highest yield was attributed to the increased production of effective tiller and grains panicle-1. The optimum dose of nitrogen estimated for Binadhan-7, BRRI dhan39, BRRI dhan56 and Dhanigold are 131.31, 122.97, 126.50 and 133.14 kg ha-1, respectively. Thus, this study concludes that the highest yield of short duration rice varieties Binadhan-7, BRRI dhan39, BRRI dhan56 and Dhanigold could be obtained by applying nitrogen at 131.31, 122.97, 126.50 and 133.14 kg ha-1, respectively.

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