scholarly journals IDENTIFICATION OF RICE (Oryza sativa L.) VARIETIES SUITABLE FOR DRY SEASON AND WET SEASON PLANTING

2013 ◽  
Vol 11 (1) ◽  
pp. 24
Author(s):  
Sumarno Sumarno ◽  
Entis Sutisna
Keyword(s):  
Grain Yield ◽  
Oryza Sativa L ◽  
Block Design ◽  
Dry Season ◽  
Growth And Yield ◽  
Wet Season ◽  
Rice Varieties ◽  
Seasonal Adaptation ◽  
Grain Yields ◽  
Planting Season

Rice planting on dry and wet seasons faces a specific climatological characteristic, which affects directly on rice growth and yield. Fifteen rice genotypes were evaluated for their seasonal planting adaptation at Sukamandi Experimental Station, Subang, West Java, during the dry and wet seasons of 2009-2010.<br />Randomized complete block design with three replications was applied on the experiment. Plot size was 4 m x 6 m and plant spacing was 20 cm x 20 cm. Standard agronomic practices were applied on both planting season experiments. Data were collected for major morphological traits, days to grain maturity and grain yield, measured on wet and dry basis (11% moisture content). Data were analysed for analyses of variance for each season and for combined seasons, and mean values separation of the variable used the 5% Duncan Multiple Range Test. Correlation between grain yields and morphological variable data were computed for each season and for combined seasons. The correlation coefficients of variables and grain yield were partitioned into direct and indirect causes using path analyses. Combined analyses of variances indicated significant effects of genotypes, seasons and genotypes x seasons interaction for almost all variables, including grain yields, suggesting there were seasonal adaptation specificity among genotypes. Five genotypes were identified as suitable for dry season planting, and nine<br />genotypes as suitable for wet season planting. Among those genotypes, three genotypes, namely Mekongga, Inpari-10 and OM 5240 were suitable for both dry and wet season planting. Ciherang and Cigeulis varieties were more suitable for dry season, while Cibogo, Inpari-1, Inpari-3, Inpari-5, and Inpari-8 were more suitable for wet season planting. Adopting the most productive rice varieties for planting on dry or wet season as was suggested on this research should increase rice production substantially. To facilitate the availability of varieties adapted<br />for a specific planting season, rice breeding should purposedly apply a directional selection of lines suitable for specific planting season, starting on the early generation of selection. <br />

scholarly journals IDENTIFICATION OF RICE (Oryza sativa L.) VARIETIES SUITABLE FOR DRY SEASON AND WET SEASON PLANTING

2013 ◽  
Vol 11 (1) ◽  
pp. 24 ◽  
Author(s):  
Sumarno Sumarno ◽  
Entis Sutisna
Keyword(s):  
Grain Yield ◽  
Oryza Sativa L ◽  
Block Design ◽  
Dry Season ◽  
Growth And Yield ◽  
Wet Season ◽  
Rice Varieties ◽  
Seasonal Adaptation ◽  
Grain Yields ◽  
Planting Season

Rice planting on dry and wet seasons faces a specific climatological characteristic, which affects directly on rice growth and yield. Fifteen rice genotypes were evaluated for their seasonal planting adaptation at Sukamandi Experimental Station, Subang, West Java, during the dry and wet seasons of 2009-2010. Randomized complete block design with three replications was applied on the experiment. Plot size was 4 m x 6 m and plant spacing was 20 cm x 20 cm. Standard agronomic practices were applied on both planting season experiments. Data were collected for major morphological traits, days to grain maturity and grain yield, measured on wet and dry basis (11% moisture content). Data were analysed for analyses of variance for each season and for combined seasons, and mean values separation of the variable used the 5% Duncan Multiple Range Test. Correlation between grain yields and morphological variable data were computed for each season and for combined seasons. The correlation coefficients of variables and grain yield were partitioned into direct and indirect causes using path analyses. Combined analyses of variances indicated significant effects of genotypes, seasons and genotypes x seasons interaction for almost all variables, including grain yields, suggesting there were seasonal adaptation specificity among genotypes. Five genotypes were identified as suitable for dry season planting, and nine genotypes as suitable for wet season planting. Among those genotypes, three genotypes, namely Mekongga, Inpari-10 and OM 5240 were suitable for both dry and wet season planting. Ciherang and Cigeulis varieties were more suitable for dry season, while Cibogo, Inpari-1, Inpari-3, Inpari-5, and Inpari-8 were more suitable for wet season planting. Adopting the most productive rice varieties for planting on dry or wet season as was suggested on this research should increase rice production substantially. To facilitate the availability of varieties adapted for a specific planting season, rice breeding should purposedly apply a directional selection of lines suitable for specific planting season, starting on the early generation of selection.

Assessment of genetic variability for quantitative characters in rice (Oryza sativa L.) under post flood situation in sali

2021 ◽  
Vol 58 (1) ◽  
pp. 43-48
Author(s):  
Dalibha Pathak ◽  
Umesh Ch. Kalita
Keyword(s):  
Grain Yield ◽  
Coefficient Of Variation ◽  
Quantitative Traits ◽  
Oryza Sativa L ◽  
Block Design ◽  
Genetic Advance ◽  
Spikelet Sterility ◽  
Rice Varieties ◽  
Randomized Block Design ◽  
Spikelets Per Panicle

Sixteen genotypes of rice (including one check) were evaluated on 18 quantitative traits during sali (August), 2018 in a randomized block design with three replications at Instruction cum Research Farm, Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat to study the nature and magnitude of variability, heritability and genetic advance under delayed sown condition. The analysis of variance for 18 quantitative traits revealed the presence of significant differences for grain yield and its component characters. The highest genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) was observed for chaffs per panicle followed by grains per panicle, spikelet sterility (%), spikelets per panicle, grain yield (kg/ha). A high heritability coupled with high genetic advance was observed for plant height (cm), spikelets per panicle, spikelet sterility (%), chaffs per panicle, grains per panicle, grain yield (g/hill), grain yield (kg/ha), biological yield (kg/ha), straw weight (kg/ha) and harvest index (%) indicating that selection might be effective for improvement of these characters under delayed sown condition with low input. From the findings of this investigation, one genotype viz., Gandhari emerged as the outstanding genotype which yielded 4170 kg/ha and could be directly used for cultivation in delayed sown situation with low inputs. Some other promising genotypes that yielded higher than the check Manoharsali under delayed sown condition were JR 29, JR 16, Basundhara and JR 60 and could be utilized as potential parental material in the hybridization programmes designed to develop suitable rice varieties for delayed sown situation.

scholarly journals Selection of drought tolerant rice varieties for the western mid hills of Nepal

2018 ◽  
pp. 195-206
Author(s):  
B. B. Adhikari ◽  
B. Mehera ◽  
S. M. Haefele
Keyword(s):  
Oryza Sativa L ◽  
Block Design ◽  
Cropping System ◽  
Root Weight ◽  
Total Production ◽  
Wet Season ◽  
Growth Duration ◽  
Rice Varieties ◽  
Participatory Varietal Selection ◽  
Drought Tolerant

Rice (Oryza sativa L) is the most important staple food crop in Nepal, but current yields are low and total production varies, mostly due to drought. To evaluate high yielding and drought tolerant rice genotypes in typical rainfed lowland conditions, a participatory varietal selection trials was conducted with farmers in farmer’s field at Sundarbazar, Lamjung, Nepal during the wet season 2009 and 2010. Trials were laid out in a Randomized Complete Block Design with six replications. Results obtained from two years’ experiment indicated that the genotypes IR-74371-54-1 and IR74371-70-1 matured at the same duration as the local check Radha-4 (120-123 days growth duration). Both genotypes had a high average chlorophyll content (SPAD reading of 15.9-16.1), were medium tall (110-112 cm), non-lodging, had a high number of filled grains and little sterility, and a high grain yield (mean yield 5.0 and 4.8 t ha-1, respectively). They also had the highest root length (22.4-26.2 cm) and root weight (9.5-10 g hill-1) which could tolerate more drought than the other genotypes tested. The maximum cost/benefit ratio was found in IR-74371-54-1 (1:1.72) followed by IR-74371-70-1 (1:1.66) and IR-74371-46-1-1 (1:1.65). All three lines were highly preferred by farmers in preference rankings during field visits and were released in Nepal in 2011 as Sookhadhan-2, Sookhadhan-3 and Sookhadhan-1 varieties, respectively. They fit easily into the existing cropping system in rainfed lowlands, are economically viable and safe to cultivate for the farmers in the mid hills of Nepal.Journal of the Institute of Agriculture and Animal Science.Vol. 33-34, 2015, page: 195-206

scholarly journals Effect of seedling age on growth and yield of two rice (Oryza sativa L.) varieties transplanted in Saline Coastal Area of Baros, Yogyakarta

2021 ◽  
Vol 6 (1) ◽  
pp. 38
Author(s):  
Riza Afrinda ◽  
Budiastuti Kurniasih
Keyword(s):  
Coastal Area ◽  
Saline Soil ◽  
Oryza Sativa L ◽  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Rice Varieties ◽  
Seedling Age ◽  
Shoot Dry Weight ◽  
Significant Difference

Marginal land along the coast should be utilized to increase the national rice production. In addition, the use of saline resistant varieties, it is necessary to determine the best seedling age for saline soil. This study aimed to evaluate the growth and yield responses of two rice varieties transplanted at different seedling age on saline soil. The experiment was arranged in a factorial Randomized Completely Block Design (RCBD) with three replications, conducted at saline coastal area of Baros, Yogyakarta, starting from January to June 2017. The first factor was rice varieties, consisting of Dendang and IR-64. Meanwhile, the second factor was the seedling age, consisting of 2 and 4 weeks after sowing (WAS) seedlings. The results showed that the growth and yield of two rice varieties (Dendang and IR-64) showed significant difference, and Dendang showed a better performance than IR-64. The higher yield of Dendang compared to IR-64 was supported by higher plant growth (shoot dry weight) and yield components (number of seeds per panicle, seed weight per plot, and productivity). The 2 and 4 WAS seedlings did not give significantly different effects on nearly all growth variables. However, 2 WAS Dendang rice seedlings had higher shoot dry weight. Meanwhile, IR-64 had higher leaf greenness in 4 WAS seedlings compared to that in 2 WAS seedlings.

Keragaman Agronomi Tanaman Padi (Oryza sativa L.) Varietas Pandan Putri pada Beberapa Sistem Tanam di Kecamatan Mundak Jaya Kabupaten Indramayu

2018 ◽  
Vol 1 (2) ◽  
pp. 1-7
Author(s):  
Yudhi Mahmud
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Plant Height ◽  
Oryza Sativa L ◽  
Block Design ◽  
Cropping System ◽  
Growth And Yield ◽  
Randomized Block Design

This reserach aims was to determine the effect of planting systems on the growth and yield of Pandan Putri  plants in several planting systems in Mundak Jaya Subdistrict, Indramayu Regency. The experiment used a randomized block design with four treatments, each treatment was six replication. The results showed that the treatment of legowo 2: 1 cropping system gave the highest effect for plant height per clump, number of tillers per clump, number of panicles per clump and dry milled grain yield per hectare and legowo 2: 1 cropping system gave the highest yield of dry unhulled rice, which is 5.19 tons / ha and was significantly different from other treatments

Varietal Trial of Traditional Upland Rice (Oryza sativa L.) Varieties Collected in the Province of Negros Occidental

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Angelie L Lumba ◽  
Mae Flor G Posadas
Keyword(s):  
Agricultural Research ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Block Design ◽  
Growth Yield ◽  
Growth And Yield ◽  
Rice Varieties ◽  
Statistical Tool ◽  
Significant Treatment ◽  
Rice Improvement

Thirteen traditional upland rice varieties (Kadidit Pilit, Red 64, Masipag 9, Masipag 15, Dinorado, Mindoro, Camuros, Masipag 22, Palawan, Suleg, Biday, Pilit , Pilit Talacdan) were evaluated in Randomized Complete Block Design (RCBD) in three replicates at the experimental area of Central Philippines State University (CPSU), Kabankalan City, Negros Occidental from November 2012 - April 2013. The parameters compared were their agronomic data on growth and yield, including grain characteristics. These data were processed using the one-way Analysis of Variance (ANOVA) with the Statistical Tool for Agricultural Research (STAR) (Version 2.0.1) while Duncan’s Multiple Range Test (DMRT) were used to compare significant treatment means at 1% level. The upland rice varieties showed significant variation in growth, yield showed distinct grain characteristics. Biday variety was the tallest, produced longer and wider leaves, and bore the longest panicle. Mindoro and Masipag 22 produced the most number of tillers. Pilit talacdan had the biggest culm, produced the heaviest panicle, with the highest number of filled grains per panicle. Pilit variety gave the heaviest weight of 1,000 grains. The grain features were also found to be distinct in each variety. The yield significantly varied among the upland rice varieties. Pilit and Pilit Talacdan gave the highest yield among the varieties grown at CPSU condition. The performing varieties would be used for upland rice improvement and breeding program and for further verification in the farmer’s field.

scholarly journals Response of Some Improved Upland Rice Varieties to Different Sources and Rates of Nitrogen Fertilizer in A Humid Rain Forest Region

2021 ◽  
Vol 5 (2) ◽  
pp. 69-91
Author(s):  
Demben Moses Esang ◽  
Angus Onwudiwe Ikeh
Keyword(s):  
Grain Yield ◽  
Ammonium Sulphate ◽  
Upland Rice ◽  
Block Design ◽  
Growth And Yield ◽  
High Yield ◽  
Rice Varieties ◽  
Calcium Ammonium Nitrate ◽  
Different Sources ◽  
N Use

ABSTRACT Nitrogen (N) is a major lacking nutrient element for the growth and yield of cereal crops Calabar, it is necessary to determine the response different sources and rates of N  in four varieties of upland  rice. Treatments comprised factorial combinations of the four rice varieties (NERICA 1, NERICA 2, FARO 45, FARO 48), three straight inorganic N sources (urea, Calcium ammonium nitrate, ammonium sulphate) and four levels of N (0, 30, 60, 90 kg N ha-1) laid in randomized complete block design. The N was split applied twice; one-third at the beginning of tillering and the remainder at panicle initiation. The results showed that the source of fertilizer N did not affect significantly the growth and yield of the rice crop (p=0.05). Considering that soils in Calabar are acid sands it will not be advisable to consistently apply such acidifying fertilizers as ammonium sulphate or urea except with soil liming which will undoubtedly increase the cost of production and probably make it unprofitable to cultivate rice in the area. The fertilized crop grew taller and produced more biomass compared with the control. It also produced significantly more tillers hill-1, panicles m-2, grains panicle-1, weight of 1,000 grains and grain yield. However, whereas NERICA 1, NERICA 2 and FARO 45 were more responsive to lower N levels, the grain yield of FARO 48 was significantly higher when the crop received 90 kg N ha-1 compared with other varieties, probably because of its longer growth duration in the field.  The responsiveness of these varieties to low N application was the result of their higher grain yield resulting from enhanced N use efficiency. Genotypes that were most responsive to low N input levels were early maturing with high N-use efficiencies. On the basis of grain yield, it is recommended that for  high yield in the humid region of Cross River State, N should be applied at the rate of  60 kg ha-1 for early-  and 90 kg ha-1 or above for the medium-maturing upland rice varieties. Keywords: Rice, Varieties, Growth and Yield

scholarly journals Optimization of Nitrogen Fertilization and Seedling Density of A New Rice Type (Oryza sativa L.) “IPB 3S”

2017 ◽  
Vol 4 (3) ◽  
pp. 94-101
Author(s):  
Sugiyanta Sugiyanta ◽  
Galih Angga Kusuma
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Oryza Sativa L ◽  
Rice Seedling ◽  
Growth And Yield ◽  
Optimum Dose ◽  
Seedling Density ◽  
Plant Type ◽  
Rice Varieties ◽  
Rate Of Photosynthesis

The new plant type of rice, or ‘padi tipe baru’ (PTB) in Indonesian, is a new group of rice cultivars with a higher productivity compared to the modern rice varieties (‘varietas unggul baru’ or VUB). This study was conducted to determine the optimum dose of nitrogen fertilization and the seedling density or number of seedlings per hill to increase growth and yield of the new type of rice “IPB 3”. The experiment was conducted in the Bogor Experimental Station  in January to June 2015.  Nitrogen doses (90, 120, 150, 180 kg N.ha-1) and number of seeds per hill (1, 5, 10, 15 and 20) were tested.  The results showed that the increased dose of nitrogen fertilizer reduced the percentage of filled grains, the rate of photosynthesis and the grain yield per hectare. Similarly, an increase in the seedling density up to 15 seeds decreased the dry matter of the crop, the number of grains per panicle, and grain weight per plant, but increased the grain yield per hectare. The optimum yield of “IPB 3S” was achieved with  90 kg N.ha-1 with 15 seeds per hill. The results of this study have provided a guideline for an improved nitrogen management in relation to rice seedling population to increase yield of a new rice type “IPB3S”.Keywords:  “IPB 3S”, new plant type, fertilizer, local variety

scholarly journals Exploring the Relationship between Yield and Yield Attributing Traits in Advanced Breeding Lines of Rice (Oryza sativa L.)

2021 ◽  
pp. 350-358
Author(s):  
Danish Mushtaq ◽  
Bupesh Kumar ◽  
Praveen Singh ◽  
Manmohan Sharma ◽  
Ashish Sheera
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Oryza Sativa L ◽  
Association Studies ◽  
Block Design ◽  
Phenotypic Expression ◽  
Panicle Length ◽  
Rice Varieties ◽  
Breeding Lines

Aim: Present study endeavors to explore the genetic variability for various agro-morphological and quality traits as well as to delineate the association between grain yield and its yield attributing components Study Design: Randomized Complete Block Design Place and Duration of Study: Division of Plant Breeding and Genetics, She-e-Kashmir University of Agricultural Sciences and Technology of Jammu during kharif 2020. Methodology: A experiment was carried out to determine the association between grain yield and yield attributing components among advanced breeding lines of rice to establish a well grounded selection criteria for developing rice varieties with improved grain yield. Phenotypic coefficient of variation (PCV) was found to be relatively greater than the genotypic coefficient of variation (GCV) for most of traits indicating role of environment in the phenotypic expression of traits. Characters viz., plant height, total number of tillers per plant, number of effective tillers per plant, panicle length and grain yield per plant exhibited high heritability coupled with high genetic advance indicating their efficient inheritance from preceding generations. Results: Association studies indicated that characters viz., Plant height, total number of tillers per plant, number of effective tillers per plant, panicle length, 1000 grain weight and grain yield per plant had a significant positive relationship with grain yield per plot indicating their role in breeding rice varieties for higher grain yield. Conclusion: Cause and effect relationship revealed that traits viz., days to 50 per cent flowering, total number of tillers per plant, days to maturity, panicle length and grain yield per plant can be exploited for indirect selection for improving grain yield.

scholarly journals Kendali Genetik Toleransi Kekeringan pada Padi Sawah (Oryza sativa L.)

2016 ◽  
Vol 44 (2) ◽  
pp. 119 ◽  
Author(s):  
Punjung Medaraji Suwarno ◽  
Desta Wirnas ◽  
Dan Ahmad Junaedi
Keyword(s):  
Drought Tolerance ◽  
Oryza Sativa L ◽  
Block Design ◽  
Irrigation Treatment ◽  
Tiller Number ◽  
Wet Season ◽  
Rice Varieties ◽  
Narrow Sense Heritability ◽  
Additive Variance ◽  
Rainfed Rice

ABSTRACT<br /><br />Drought has become a main barrier of rainfed rice in dry climate and short wet season areas. Growing drought-tolerance varieties is a practical approach to minimize yield lost of rice by the drought stress condition. The aims of this research were to examine the inheritance of drought tolerance character, to identify selection traits, and to estimate genetic gain for drought tolerant on lowland rice. Four rice varieties, i.e., Jatiluhur, Mentik Wangi, IR64, Way Apo Buru, were fully diallel crossed. The parent varieties and the F1’s were grown at Sawah Baru, Dramaga experimental field in two irrigation treatments, optimum and sub optimum where irrigation was applied until three weeks after transplanting. A randomized complete block design with three replications for each irrigation treatment was applied to the experiment. The results showed that there is a significant maternal effect on tiller number. The values of additive variance were higher than the dominance for all other characters except tiller number and grain weight per plant. The highest value for narrow sense heritability was achieved by panicle length.<br /><br />Keywords: diallel, drought, genetic, rice<br /><br />

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