scholarly journals Farmers’ Preferred Traits and Perceptions of Drought Stress on Rainfed Upland Rice Production across Two Rice Growing States of Nigeria

2019 ◽  
Vol 7 (2) ◽  
pp. 160
Author(s):  
Christian Okechukwu Anyaoha ◽  
Uyokei Uba ◽  
Ejiro Onotugoma ◽  
Semon Mande ◽  
Vernon Gracen ◽  
...  
Keyword(s):  
Drought Stress ◽  
Upland Rice ◽  
Rice Variety ◽  
Rice Production ◽  
Comparative Approach ◽  
Structured Interviews ◽  
Rice Varieties ◽  
Rice Farmers ◽  
Drought Tolerant ◽  
Rainfed Upland

The intermittent and widespread occurrence of drought in rainfed upland rice fields across sub-Sahara Africa has led to tremendous decrease in food security in the region. Although high yielding, drought tolerant varieties have been developed over years to mitigate this trend, limited adoption had been recorded for most of these materials. This study investigated farmers’ perceptions on drought stress and their preferred traits in new upland rice varieties across two major upland rice growing states in Nigeria. Participatory Rural Appraisal was conducted among 119 rice farmers using comparative approach, probing and semi structured interviews. Result based on farmers knowledge of changes in rainfall pattern and preferred traits such as plant architecture and grain shapes in a new upland rice variety differed significantly across the two state. The results identified drought stress as one of the main constraints to upland rice production across communities. The ideal upland rice variety desired by most respondents in both states should be of medium plant height (115-130cm) characterized by white, long and bold grains. This study has demonstrated the importance of understanding farmer’s desired traits in a new upland rice variety and the need to incorporate identified traits in creation of resilient new upland rice varieties adaptable to rain-fed upland rice growing regions of Nigeria.

scholarly journals Evaluation of Short Duration Drought Tolerant Rice Varieties in Drought Prone Areas of Subarnapur District of Odisha

2020 ◽  
pp. 21-26
Author(s):  
S. Pradhan ◽  
F. H. Rahman ◽  
S. Sethy ◽  
G. Pradhan ◽  
J. Sen
Keyword(s):  
Short Duration ◽  
Upland Rice ◽  
Plant Protection ◽  
Block Design ◽  
Rice Variety ◽  
Rice Varieties ◽  
Agronomic Practices ◽  
Drought Tolerant ◽  
Randomized Block Design ◽  
Sowing Seed

A study was conducted in farmer’s field through technology demonstrations during Kharif season of 2018 and 2019 in Subarnapur district of Odisha to recommend the most suited short duration drought tolerant upland rice variety particular to the locality. Six different varieties like Sahabhagi dhan, Mandakini, Jogesh, DRR-44, and DRR-42 & Khandagiri were taken with four replications in Randomized Block Design in both years. Technology demonstration included not only the improved short duration varieties, but also a package of good agronomic practices viz. line sowing, seed treatment with Bavistin, proper fertilization with dose @ 80:40:40 NPK/ha, pre emergence herbicide application with pretilachlor, needful manual weeding and  need based plant protection chemicals. The results of demonstration showed that farmers could increase rice productivity notably by adopting improved variety Sahabhagi dhan and DRR-44. These varieties recorded higher grain yields of 64% and 46%, respectively, and fetched a sum return of Rs 25620 and Rs 25275 over farmers’ local variety Khandagiri.

scholarly journals Response of some upland rice varieties to drought stress

2017 ◽  
Vol 1 (2) ◽  
pp. 69-77
Author(s):  
EDI PURWANTO ◽  
SAMANHUDI SAMANHUDI ◽  
YONIAR EFFENDI
Keyword(s):  
Drought Stress ◽  
Stress Condition ◽  
Upland Rice ◽  
Rice Variety ◽  
Dry Weight ◽  
Grain Weight ◽  
Rice Varieties ◽  
Resistance Level ◽  
Drought Stress Condition ◽  
Four Levels

Purwanto E, Samanhudi, Yoniar Effendi Y. 2017. Response of some upland rice varieties to drought stress. Trop Drylands 1: 69-77. The study aimed to examine the response of upland rice varieties at germination stage on several PEG (Polyethylene Glycol) 6000 concentration levels and to determine growth characteristics, physiological changes and yield of upland rice varieties under drought stress condition in a pot experiment. The study consisted of two experiments; the first was to study germination and early growth, and the second was to study the vegetative and generative growth of upland rice under drought stress condition. Experiments I and II were conducted in a completely randomized factorial design consisted of two factors and three replications. In experiments I, the first factor was upland rice variety comprised of 10 varieties and the second factor was PEG concentration consisted of four levels. In experiment II, the first factor was upland rice varieties that responded the best to drought stress in experiment I, and the second factor was the drought stress treatment consisted of moisture content at 100, 75, 50 and 25% field capacity. The research was conducted at the Laboratory of Plant Physiology and Biotechnology and the greenhouse of Faculty of Agriculture, Sebelas Maret University (UNS) Surakarta. The results showed that the germination and vigor index decreased with increasing levels of PEG concentration. PEG concentration of 25 g L-1 of water was the most optimum for screening drought resistant upland rice. In experiment I, Towuti, Situ Patengang, Kalimutu and Gajah Mungkur varieties showed the best response to drought stress. Increased intensity of drought stress resulted in a reduction of plant height, number of tillers, dry weight, relative growth rate, leaf area, number of grains hill-1, 1000 grain weight, dry grain weight hill-1 and root dry weight. The drought stress also caused an earlier flowering date and increased percentage of empty grain. Based on the dry grain weight hill-1, Towuti exhibited a higher drought resistance level than Gajah Mungkur, Situ Patenggang and Kalimutu.

scholarly journals Combining Ability for Drought Tolerance in Upland Rice Varieties at Reproductive Stage

2017 ◽  
Vol 9 (3) ◽  
pp. 138 ◽  
Author(s):  
G. M. Malemba ◽  
F. M. Nzuve ◽  
J. M. Kimani ◽  
M. F. Olubayo ◽  
J. W. Muthomi
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Combining Ability ◽  
Upland Rice ◽  
Block Design ◽  
Field Evaluation ◽  
Rice Production ◽  
Rice Varieties ◽  
F2 Population ◽  
Drought Conditions

Rice is an important food crop for human population ranking second among the mostly consumed cereal grains worldwide. Upland rice production is greatly constrained by drought stress resulting from rainfall variation patterns. Cultivation of drought tolerant varieties is considered the best option for drought management in rice production. The already released upland rice varieties are drought susceptible and have poor grain attributes hence, the aim of this study was to determine the combining ability for drought tolerance in upland rice. Four upland NERICA and two upland rice varieties were selected as parents for generating F1s crosses following 6 × 6 complete diallel. The generated 30 F1 crosses were advanced to F2 population for field evaluation. The F2 progenies together with six parents were planted in two sites; KALRO-Mwea Center Farm and Kirogo research Farm following a randomized complete block design in three replications. Drought stress was initiated 45 days after sowing after which data was collected on drought and agronomic parameters. The study revealed large genetic variations among the genotypes used. Both GCA and SCA were significant indicating the importance of both additive and non additive gene action in the expression of studied traits. In this study NERICA 2 and NERICA 15 were identified as good combiners for drought tolerance and grain yield under drought conditions. The single crosses namely; NERICA 15 × NERICA 2, NERICA 1 × NERICA 15, NERICA 11 × NERICA 15 and NERICA 2 × NERICA 15 were identified as superior for improving yield under drought conditions.

Evaluation of the tolerance of Thai indigenous upland rice germplasm to early drought stress using multiple selection criteria

2015 ◽  
Vol 15 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Kittichai Narenoot ◽  
Tidarat Monkham ◽  
Sompong Chankaew ◽  
Patcharin Songsri ◽  
Wattana Pattanagul ◽  
...  
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Selection Criteria ◽  
Upland Rice ◽  
Block Design ◽  
Rice Variety ◽  
Tolerance Index ◽  
Rice Varieties ◽  
Rice Germplasm ◽  
Drought Tolerance Index

Drought remains the most important factor that affects rice productivity, especially in rainfed areas, worldwide. Upland rice is one of the crop choices of farmers in the rainfed environment. Although upland rice varieties require less water than lowland rice varieties, yields often remain limited by drought, particularly in the period of early growth. The aims of this study were to identify the traits related to early drought tolerance in upland rice varieties, and to identify the potential sources of germplasm for early drought tolerance. A total of sixty upland rice varieties were planted in a factorial experiment with a randomized complete block design with 3 replications in the rainy seasons of 2011 and 2012, under greenhouse conditions. Based on the drought tolerance index (DTI), the test germplasm sources were classified into three groups: (i) susceptible; (ii) moderately tolerant; (iii) tolerant to drought stress. Grain yield (GY) showed significant negative correlations with the leaf rolling score (r= − 0.623, P< 0.01), the leaf death score (LDS) (r= − 0.673, P< 0.01) and the recovery score (r= − 0.746, P< 0.01), while leaf dry matter (r= 0.698, P< 0.01) and leaf water potential (r= 0.618, P< 0.01) had significant positive correlations with GY. These findings indicate the suitability of the DTI as the selection criteria for early drought tolerance in a breeding programme. In addition, the upland rice germplasm accessions KKU-ULR011, KKU-ULR012, KKU-ULR125, KKU-ULR199 and KKU-ULR292 were identified as having high levels of stability for drought tolerance in both the 2011 and 2012 experiments, suggesting their potential for further use for rice variety improvement for drought tolerance.

scholarly journals Upland rice breeding for drought tolerance (review)

2021 ◽  
pp. 15-22
Author(s):  
P. I. Kostylev ◽  
А. V. Aksenov
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Production Systems ◽  
Upland Rice ◽  
Rice Production ◽  
Direct Selection ◽  
Rice Farmers ◽  
Resistant Varieties ◽  
Grain Productivity ◽  
The Impact

Upland rice grown by rice farmers is having the lowest productivity in the rice production system. Drought stress is the most severe abiotic constraint for upland rice. The improvement of rice productivity in such ecosystems is essential to meet the food security needs of the population. Therefore, the cultivation of drought tolerant rice is becoming an increasingly important task. Numerous minor traits have been proposed to assist plant breeders in their selection, but most of these traits are not used in breeding because they are not practical for breeding purposes, have low heritability, or are not very correlated with grain productivity. There has been shown, that standardization of drought screening improves heritability under stress to the values similar to those obtained for the yields under well-watered conditions. Nowadays there has now been proven that drought-resistant varieties can be developed by direct selection for productivity under stressful conditions. Currently, there have been identified many quantitative trait loci (QTL) of drought tolerance in rice, but only a few of them are suitable for use in marker breeding. However, the identified genes of great drought tolerance can be effectively used in breeding for drought tolerance. The use of molecular markers will improve the efficiency of breeding work. The current review has briefly considered the importance of rice, its various production systems, and the impact of drought stress on rice production. There have been discussed the physiological mechanisms contributing to the maintenance of grain productivity under drought conditions, and there have been analyzed the breeding methods for improvement of drought resistance.

scholarly journals Sikap dan Tingkat Kepuasan Petani akan Introduksi Varietas Unggul Baru Padi Gogo

2021 ◽  
Vol 26 (4) ◽  
pp. 511-520
Author(s):  
Chanifah Chanifah ◽  
Dewi Sahara ◽  
Budi Hartoyo
Keyword(s):  
Upland Rice ◽  
Rice Production ◽  
Primary Data ◽  
Survey Method ◽  
Satisfaction Level ◽  
Rice Varieties ◽  
Pests And Diseases ◽  
Satisfaction Index ◽  
Rice Farmers ◽  
Attribute Model

The development of rice irrigated farming is constrained by the conversion of land agricultural to non-agricultural. Therefore, policy to develop upland rice production in dryland and rainfed lowland is increasingly being implemented. Efforts to expand the application of technological innovations as a lever of upland rice production have intensified by introducing new superior varieties of upland rice. This research aims to analyze farmers' attitudes and satisfaction levels with introducing upland rice to attributes based. The location of this research is in Tegalgiri Village, Nogosari District, Boyolali Regency. Primary data were obtained through a survey method of 35 farmers who planted the Rindang 1, Rindang 2, Inpago 10, and Inpago 12 varieties. Farmer attitudes were analyzed using the Fishbein Multi-attribute Model, while farmer satisfaction level was analyzed using the customer satisfaction index (CSI). The results are the attributes "production" and "resistance to pests and diseases" were agronomic performance which was the most essential and primary consideration for farmers in choosing varieties. Farmers have a positive attitude towards the four new superior varieties. The meaning is that farmers want to adopt and plant the new superior varieties of upland rice. Farmers' satisfaction levels are in the "satisfied" to "very satisfied" category of the four new superior varieties. Hopefully, the new superior upland rice varieties that were introduced can be a choice of varieties by farmers.   Keywords: atributtes, farmer’s attitude, satisfaction level, upland rice, superior varieties

scholarly journals Improvement of Upland Rice Variety by Pyramiding Drought Tolerance QTL with Two Major Blast Resistance Genes for Sustainable Rice Production

Rice Science ◽  
2021 ◽  
Vol 28 (5) ◽  
pp. 493-500
Author(s):  
Vishalakshi Balija ◽  
Umakanth Bangale ◽  
Senguttuvel Ponnuvel ◽  
Kalyani Makarand Barbadikar ◽  
Srinivas Prasad Madamshetty ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Resistance Genes ◽  
Upland Rice ◽  
Blast Resistance ◽  
Rice Variety ◽  
Rice Production ◽  
Blast Resistance Genes

Adoption of improved rice varieties by farmers in Bende local government area of Abia state

2015 ◽  
Vol 11 (2) ◽  
pp. 204-215
Author(s):  
JC Ijioma ◽  
CK Osundu
Keyword(s):  
Local Government ◽  
State Government ◽  
Goodness Of Fit ◽  
Information Dissemination ◽  
Rice Production ◽  
Local Government Area ◽  
Farm Size ◽  
Tobit Regression ◽  
Rice Varieties ◽  
Rice Farmers

The study investigated the adoption of improved rice varieties by farmers in Bende Local Government Area, Abia State, Nigeria. A multi-stage random sampling technique was used to select a total of 120 rice farmers. Descriptive statistics and tobit regression model were employed to analyze the data. Results showed that cumulatively 73.3% of the farmers fell within the age range of 20-50 years, most (86.7%) of the rice farmers were literate. More than half (57.5%) of the rice farmers are females. Result further indicated that 43.3% had household sizes of 5-8 persons. A fair proportion (33.3%) had been in rice production for 11-15 years, while majority (73.3%) belongs to farmers’ associations. Fairly good (51.6%) were aware of the improved rice varieties and used it, while a substantial number (93.3%) number of the farmers cultivated swamp rice. MAS 240 variety (mean=3.13), Faro 7 variety (mean=2.95), Faro II variety (mean=2.75), Faro 8 variety (mean=2.70.) and Faro 48 variety (mean=2.68) were highly adopted by farmers in the area. The Chi square value of 7.290 was significant at 1.0% probability level and indicates goodness of fit of the model used. Coefficient of age (-0.023), and gender (-1.967) were negative and significant at 10.0% and 1.0% level of probability respectively. The coefficient of education level (0.041), farm size (0.940), farming experience (0.206) and membership of farmers’ association (0.168) were significant at 5.0% and were positively related to adoption of improved rice varieties. Farmers encountered various problems of paucity of funds (35.8%), scarcity of inputs (22.5%), and dearth of information (20.89). Based on these findings it was recommended that rice farmers should form cooperative societies to enable them raise funds for buying agricultural equipment to boost rice production. More young male farmers should be sensitized and motivated by the state government to take up rice production since female farmers dominate rice production in the area. Extension agencies should increase the level of information dissemination and teaching to the rice farmers’ clientele.Key words: Adoption, Improved Varieties, Rice

scholarly journals Selection of drought-tolerant rice varieties from the rice variety bank of Can Tho university

2019 ◽  
Vol 02 ◽  
pp. 65-70
Author(s):  
Tin Q. Huynh
Keyword(s):  
Water Stress ◽  
Drought Tolerance ◽  
Rice Variety ◽  
Mekong Delta ◽  
Rice Cultivation ◽  
Rice Varieties ◽  
Wetting And Drying ◽  
Drought Tolerant ◽  
Susceptible Control ◽  
Rice Improvement

Drought has been a big problem and damaged seriously to rice cultivation and production in Vietnam and the Mekong Delta region; evaluating drought tolerance of rice is a major objective for the rice improvement programmes in Can Tho University. Fifty-two collected rice varieties including resistant and susceptible control varieties were screened for water stress under the artificial drought condition. Marker RM223 was used to identify the drought tolerance genotypes for some selected varieties with good and moderate tolerant scores. After 30 days of water stress, the results were 6 varieties of good tolerant, 8 varieties of moderate tolerance, 36 varieties of moderately susceptible and 2 varieties of susceptible to drought. Analyses of PCR showed that 10 varieties expressed the similar bands with the resistant control variety. Four varieties (LH8, MTL812, Lua Canh and VB1) with good tolerant to drought were recommended to use for genetic materials of rice breeding program and applying in alternative wetting and drying irrigation technique for rice cultivation.

scholarly journals Performance of Drought Tolerant Rice Varieties in Malkangiri District of South Eastern Ghat Zone of Odisha

2020 ◽  
pp. 157-162
Author(s):  
A. K. Rai ◽  
S. R. Dash ◽  
N Behera ◽  
T. K Behera ◽  
H Das
Keyword(s):  
Plant Height ◽  
Rice Variety ◽  
Economic Loss ◽  
Point Of View ◽  
Growth Stages ◽  
Rice Varieties ◽  
Economic Point ◽  
Eastern Ghat ◽  
South Eastern ◽  
Drought Tolerant

Drought is the major problem in India and occurrence at the time of critical growth stages, reduce crop yield significantly. The National Rice Research Institute, Cuttak, Odisha has developed so many drought tolerance rice varieties to reduce the economic loss due to drought. Krishi Vigyan Kendra, Malkangiri introduced NRRI released two rice varieties i.e. Sahbhagi Dhan and Satyabhama at framers' field to evaluate the performance of these drought tolerant varieties in South Eastern Ghat Zone of Odisha. The highest plant height was observed with the rice variety Satyabhama (104.1 cm). But, overall performance of Sahbhagi Dhan was better as compare to Satyabhama and local check verity (Khandagiri). Sahbhagi Dhan gave highest yield of 36.5 q/ha, which was statistically differed from others. Correlations study for Sahbhagi Dhan was assessed and observed the positive correlation for grain yield with all studied characters except plant height. For economic point of view, Sahbhagi Dhan recorded highest net return of Rs.19, 925/- per ha along with B:C ratio of 1.6 as compared to the rest two varieties.

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