scholarly journals Effect of Nitrogen Fixing Bacteria and Nitrogen Rate on Yield and Growth of Common Bean

Author(s):  
Somaye Fallahi ◽  
Peyman Sharifi

To study the effects of nitrogen (N) rate and co-inoculation of nitrogen-fixing bacteria (Rhizobium phaseoli) on common bean, an experiment was performed in Rasht, Iran. Common bean genotype, Guilanian landrace, was planted in a factorial experiment based on a randomized complete block design with three replicates on April, 15th in 2014. The first and second factors were nitrogen rates (0, 30, 60, 90 and 120 kg.ha-1 as urea) and Rhizobium phaseoli (inoculation and un-inoculation), respectively. Nitrogen had significant effect on seed yield and plant height. The effect of Rhizobium phaseoli was significant on seed yield, plant height, pod length, pods per plant, seeds per pod and nitrogen content in leaf. Interaction effects of nitrogen and Rhizobium phaseoli were not significant on any of the traits. Application of 60 kg.ha-1 nitrogen significantly improved seed yield, plant height and number of pods per plant. Nitrogen supply beyond the 60 kg.ha-1 decreased plant height, pods per plant and seed yield. The greatest values of seed yield (1635 kg.ha-1), plant height (30.01 cm), pod length (13.19 cm), number of pods per plant (6.7), number of seeds per pod (4.34) and nitrogen content in leaf (4.12%) was observed in inoculation treatment. The results indicated the inoculation of common bean seeds by Rhizobium phaseoli improved the plant growth, productivity and quality. Therefore, the common bean inoculation with Rhizobium phaseoli is suitable to achieve the yield potential and reduce the adverse effects of environmental and may be recommended due to its advantages in terms of reduced application of nitrogen fertilizer.

2000 ◽  
Vol 48 (3) ◽  
pp. 289-293 ◽  
Author(s):  
A. Orak

This research was carried out in the Experimental Field of Tekirda đ Agricultural Faculty. Two common vetch varieties and 5 lines were sown with 150 seeds/m 2 plant density according to a randomised block design. Some important yield related characters such as plant height, number of branches, number of pods per plant, number of seeds per pod, pod width, pod length, 1000 seed weight, fodder and seed yield were examined. The results of variance analysis showed that the effects of genotype, year and their interaction on number of branches and number of pods per plant were all significant. In addition, the effect of year and variety on plant height and seed yield were found to be significant. Moreover, the number of seeds per pod, pod width and pod length were found to be significant in variety and year × variety interaction. There was only a difference between years for 1000 seed weight and fodder yield. According to the results, genotype 283 and Tokat had similar performance to that of commercial cultivars (Ürem, Kubilay). Especially the fodder and seed yield of genotype 283 were found to be higher than those of the cultivars (Ürem, Kubilay).


Author(s):  
Sujon Kumar ◽  
Barkat Ali ◽  
A. B. M. Khaldun ◽  
Shams Shaila Islam ◽  
M. Shalim Uddin ◽  
...  

The present study was carried out to estimate heritability, genetic variability, correlation and genetic advance among F5 populations of ten genotypes in Brassica species. This study was executed following randomized complete block design (RCBD) with three replications during November 2017 to February 2018 at the experimental field of College of Agricultural Sciences, International University of Business Agriculture and Technology, Dhaka, Bangladesh. Aim of the research was to evaluate and select the best segregating genotypes for the yield and yield contributing traits towards variety development programs. Analysis of variance revealed that the genotypes were significantly different for all the characters studied. The relative phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for all the traits studied. The high GCV value was observed for the days to 50% flowering (FF), plant height (PH), primary branches per plant (PBP), pod per plant (PP) and seed yield per plant (SYP) that indicated a high broad-sense heritability. A significant positive correlation with seed yield per plant was found in days to 50% flowering (0.578**), the plant height, (0.787**), pod length (PL) (0.406*), seeds per plant (SP) (0.369*), pod per plant (0.697**) and hundred seeds weight (HSW) (0.500**), but significantly negative correlation found in primary branches per plant (-0.046*). The results of path coefficient analysis revealed that days to 50% flowering (0.287), plant height (0.407), pod length  (0.919), seeds per plant (0.033), pod per plant (0.035) and hundred seeds weight (0.795) had a positive direct impact on seed yield per plant and thus it was indicated that these traits could be exploited for the enhancement of yield performance of Brassica species. This study showed that based on the agronomic performance execution, genotypes G2, G5, G6 and G8 might be proposed for future hybridization programs in Bangladesh followed by variety development activities.


Author(s):  
Om Vir ◽  
A. K. Singh

The 44 accessions which were collected from Rajasthan, Gujarat and M.P. were evaluated in a randomized complete block design with three replicates during <italic>summer</italic> and <italic>kharif</italic> seasons in the hot arid climate of western Rajasthan to estimate the presence of genetic variability, inter-characters associations, to identify a suitable accession for cultivation during <italic>summer</italic> and to compare the relative performance of the genotypes in two seasons. The high degree of genetic variability was estimated during both seasons for seed yield per plant (g), plant height (cm.), pod length (cm.), peduncle length (cm.), number of branches per plant (cm), number of clusters per plant, number of cluster per branch and cluster length (cm.). The moderate to high heritabilities coupled with moderate expected genetic advance were observed for all studied traits. The plant height, pod length, number of branches per plant exhibited positive and significant association with seed yield whereas the incidence of leaf crinkle virus and yellow mosaic virus correlated negatively and significantly with seed yield. The accession IC 39786 exhibited absolute genetic resistance to crinkle virus disease in the field conditions. The accessions IC 36245, IC-36555, IC 36667, IC 36577 and IC 36604 exhibited yield advantage over best check during <italic>summer</italic> whereas accessions IC- 39675, IC-36607, IC-251908, IC 36245 and IC-36563 performed better than best check in terms of seed yield during <italic>kharif</italic> season.


2011 ◽  
Vol 39 (1) ◽  
pp. 191 ◽  
Author(s):  
Ghobad SHABANI ◽  
Mohammad Reza ARDAKANI ◽  
Mohammd Reza CHAICHI ◽  
Juergen FRIEDEL ◽  
Kazem KHAVAZI ◽  
...  

The effect of different fertilizing systems on the seed yield and phosphorus uptake in annual medic (Medicago scutellata cv. Robinson) was examined at two locations under dry farming conditions in Kermanshah province, Iran, in 2009. Experiments were conducted based on a randomized complete block design with three replications; the treatments consisted of control (no fertilizer), chemical fertilizer, biological fertilizer and different combinations of chemical and biological fertilizing systems. The results showed that application of different fertilizing systems had a highly significant effect on the number of pods per plant. The highest values were obtained in the treatment using the urea chemical fertilizer + phosphorus-solubilizing bacteria + mycorrhiza. The highest soil seed bank was recorded in the nitrogen-fixing bacteria + phosphorus-solubilizing bacteria treatment; it increased the number of seeds by approximately 50 percent compared to the control (only 134 pod containing seeds). The highest pod yield was obtained after applying nitrogen-fixing bacteria + mycorrhiza (445 kg/ha), the lowest yield in the control treatment (266 kg/ha). In general, under the conditions of this experiment, the seed yield of annual medic var. Robinson receiving nitrogen-fixing + phosphorus-solubilizing bacteria out-yielded other fertilizing treatments. This indicates a synergistic interaction between these groups of bacteria that increases seed yield, the soil seed bank as well as the seed phosphorus uptake of this plant species under dry farming conditions.


2017 ◽  
Vol 16 (2) ◽  
pp. 79-87
Author(s):  
J. B.O. PORBENI ◽  
B. M. OLAOLORUN ◽  
O. O. SANSA

A field experiment aimed at determination of influence of season on the yield potential of some cowpeas lines was carried out at the Teaching and Research Farm of Federal University of Agriculture, Abeokuta, Nigeria located on Latitude 7012' N and longitude 3020' E during the late rain season (August- November 2013) and early rain season (April- July, 2014). The experiment was laid out in a randomized complete block design with three replicates. Qualitative and quantitative data such as stem petiole pigmentation, leaf colour, flower form and colour, dry pod colour, seed coat texture, plant height, number of days to flower and first ripe pod, pod length , total number of pods/plant , total number of seeds/plant, 100-seeds weight were taken. Combined analysis of variance to determine line x season interaction, while SASTM 9.1, (2000) version statistical package was used to separate the means, Pearson correlation analysis was used to determine the inter-character relationships among the traits. Major characters causing variation within the population was calculated using Principal component analysis (PCA). Most of the cowpea lines were non-pigmented and papillinaeous, except Rosa-1 and 2 that showed rosaceous flower form. Cowpea lines such as Rosa-2, IF-Br-Y-2 and IB-Cyt.Y had yellow foliage, while the flower colour ranged from solid purple and white to white petal with purple wings. Line x season interaction revealed a high level of significance for most of the traits studied. Means of the cowpea lines’ traits were significantly different from one another. Pod length was highly correlated with number of seed per pod, pod per plant and 100 seed weight (r = 0.63, 0.45 and 0.66) respectively, while plant height had a negative and highly significant correlation with days to flowering (r = -0.58) and days to fruiting (r = -0.60).


2016 ◽  
Vol 26 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Ojwang J. David ◽  
Nyankanga O. Richard ◽  
Imungi Japheth ◽  
Olanya O. Modesto

Pigeon pea (Cajanus cajan) is an important crop in dry land and semiarid regions and is a supplementary source of dietary protein for the economic resource-constrained farmers. The aim of this research was to evaluate growth parameters of 12 vegetable pigeon pea cultivars at two locations in eastern Kenya. The number of days from planting to flowering, plant height, primary and secondary branches, and pod length and width were quantified in experimental plots in a randomized complete block design with three replications. Significant differences (P < 0.01) in days to 50% and 70% flowering (DTF) and plant maturity (DTM), respectively, were recorded among cultivars at both locations. The average plant height was significantly (P < 0.05) greater at Kiboko than at Kambi ya Mawe. The number of DTF and DTM were also greater at Kiboko than at Kambi ya Mawe site, because of supplemental irrigation. Similarly, mean pod length and width at Kiboko location exceeded that at Kambi ya Mawe by 6% and 8%, respectively. Positive and significant (P < 0.05) correlation coefficients between grain yield and pods per plant were observed, indicating that pod number is a useful indicator of yield potential of vegetable pigeon pea. The cultivars ICEAP 00068, ICEAP 00540, ICEAP 00554, ICEAP 00902, KAT 60/8, and MZ 2/9 were identified for high-yield potential under rain-fed conditions, whereas ICEAP 00902, ICEAP 00068, ICEAP 00557, ICEAP 00554, KAT 60.8, and MTHAWAJUNI showed the greatest potential when supplemental water applications were made. The cultivars KAT 60/8, ICEAP 00068, ICEAP 00554, and ICEAP 00902 were suitable for production under both rain-fed conditions and additional water applications. Yield potential of pigeon pea in the dry regions can be greatly enhanced by using cultivars with good plant growth characteristics and shoot density.


2017 ◽  
Vol 23 (1) ◽  
Author(s):  
A. B. SAGADE

The study of the effect of three well known mutagens, ethyl methane sulphonate (EMS), methyl methane sulphonate (MMS) and gamma rays (GR) on the yield contributing traits of the urdbean variety TPU-4 were carried out in the M3 generation. Effect of selected mutagenic treatments/doses of EMS (0.02, 0.03 and 0.04 M), MMS (0.0025, 0.05 and 0.01 M) and (GR) (30, 40 and 50 KR) on different yield contributing traits like plant height, plant spread, number of pods per plant, pod length, number of seeds per pod, seed yield per plant and 100 seed weight were analyzed in the M3 populations of the variety TPU-4. Seeds of M2 plants and control were harvested separately and sown to raise M3 population.. Genetic variabilty in the mutagen administered M3 progeny of the urdbean variety TPU-4 was analyzed by employing statistical methods. Data on mean values and shift in the mean of seven quantitative traits was evaluated on individual plant basis. The experimental findings revealed that concentrations / dose of the all these mutagens showed inhibitory effect on plant height, number of pods per plant, pod length and number of seeds per pod. Lower concentrations of mutagens exerted a promotory effect on plant spread, 100 seed weight and seed yield per plant while higher concentrations of these mutagens inhibited them to different extent.


2016 ◽  
Vol 96 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Yunfei* Jiang ◽  
Claude D. Caldwell

Camelina [Camelina sativa (L.) Crantz] has potential in aquaculture, livestock feed production, and the biofuel industry. It is necessary to determine the appropriate production technology for the newly introduced crop under different environmental conditions. The objective of this 2-year study was to measure the response of five camelina genotypes in terms of seed yield, yield components, and disease incidence to applied nitrogen (N) at multiple sites in the Maritime provinces of eastern Canada. The factorial experiment was set up as a randomized complete block design. The two factors were six N rates (0, 25, 50, 100, 150, and 200 kg ha−1 N) and five genotypes of camelina (Calena, CDI002, CDI005, CDI007, and CDI008). The interactive effect of N rates and genotypes was considered. Results showed that camelina, which is usually considered a low-input crop, responded positively to increased applied N at rates up to 200 kg ha−1 N. Seed yield responded differently to applied N rates depending on genotype. Branch and pod development were decisive for seed yield. The advanced line CDI007 had the highest yield potential among the five genotypes. Downy mildew infection was positively correlated with applied N rates; however, seed yield was not significantly affected by downy mildew infection.


Author(s):  
A. M. Pradhan ◽  
M. Roy Choudhury ◽  
A. Sawarkar ◽  
S. Das

The current investigation was carried out to examine the selection criteria for yield improvement in selected genotypes of Indian mustard. Twenty-four genotypes of Indian mustard were evaluated for seed yield and yield attributing characters with randomized block design with three replications. The analysis of variance showed significant differences among all the 24 genotypes against all the characters. The phenotypic and genotypic coefficient of variation were higher for most of the traits like seed yield per plant, number of secondary branches per plant and number of siliquae per plant. High heritability coupled with high genetic advance in percent of mean was registered for number of siliquae per plant, number of primary and secondary branches per plant, plant height, 1000 seed weight, siliqua length per plant and seed yield per plant suggesting predominant role of additive gene action for expression of these traits. The correlation study revealed that seed yield per plant was positively and significantly correlated with number of primary and secondary branches per plant, number of siliquae per plant, siliqua length per plant and 1000 seed weight at both phenotypic and genotypic level. The traits namely, number of secondary branches per plant recorded as highest positive direct effect followed by number of seeds per siliqua, number of siliquae per plant and plant height. Therefore, they may be carried out further evaluation in multilocational trials, biotic and abiotic stress like environmental conditions to check their stability and adaptability.


2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Ajey Karan Chaudhari ◽  
Anand Prakash Singh ◽  
B R Chaudhary

Mutation breeding like in other plants can significantly strengthen medicinal plants breeding programs and help to produce novel varieties with higher yield potential and improved yield quality. The dry and healthy seeds of P. corylifolia IC 111228 were subjected to mutagenic treatments namely ethyl methane sulphonate (EMS) and sodium azide (SA). The treatment concentrations 15mM, 30mM, 45mM and 60mM of EMS and 1mM, 2mM, 3mM and 4mM of SA were chosen to evaluate the mutagenic potential in either case. The morphological traits were evaluated in M1 generation viz. plant height, days to flowering initiation, seed yield/plant and 100-seed weight. In EMS treatment 15 mM increased the plant height and seed yield, while in SA treatment 4 mM increased the seed yield/plant and 100-seed yield.


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