scholarly journals Variation of plant and fruit traits in native Mexican costeño pepper

2018 ◽  
Vol 36 (3) ◽  
pp. 399-407
Author(s):  
Eric G Santiago-Luna ◽  
José C Carrillo-Rodríguez ◽  
José L Chávez-Servia ◽  
Catarino Perales-Segovia ◽  
Elena Heredia-Garcia

ABSTRACT In a collection of costeño peppers conserved by indigenous producers from the municipalities of Santa Maria Tonameca and Santo Domingo de Morelos, Oaxaca, Mexico, a description and classification of agromorphological variation was undertaken by characterization of 46 populations in a greenhouse distributed under complete randomized block design with three replicates. Days to first flowering, plant and fruit traits and yield per plant were evaluated. Significant differences were detected for all traits except for plant height at 120 days after planting. In a principal component analysis, the variables of green and dry weight of 15 fruits, average fruit weight, number of fruits and yield per plant were the characteristics with major descriptive value for the total phenotypic variance. In addition, two patterns of agromorphological variation were determined; for productivity, one was highly variable and integrated with pepper populations from La Oscurana, Villa Unión and San Juanito communities, and the other was integrated with less variable populations, such as those from Las Pilas. These phenotypic patterns were confirmed in a cluster analysis, where five phenotypic groups were statistically significantly different. Complementarily, an inverse relationship was determined between number of fruits per plant and average fruit weight in ten populations that presented high agronomic potential; a yield greater than 500 g per plant, more than 100 fruits per plant and an average weight greater than 3.9 g per fruit were detected.

2017 ◽  
Vol 47 (3) ◽  
pp. 195-202 ◽  
Author(s):  
Mágno Sávio Ferreira VALENTE ◽  
Maria Teresa Gomes LOPES ◽  
Francisco Célio Maia CHAVES ◽  
Ariane Mendes OLIVEIRA ◽  
Diego Rodrigo Bilby de FREITAS

ABSTRACT Repeatability allows an estimation of the number of evaluations needed to optimize the selection of superior genotypes, with consequent effects on the research costs in terms of financial and human resources. The objective of this study was to estimate the coefficient of repeatability of biometric and yield traits, related to fruits and seeds of sacha inchi (Plukenetia volubilis), and to define the number of evaluations required for an efficient selection and evaluation of genotypes of the species. A total of 37 non-domesticated accessions were evaluated for 19 months in a randomized block design with 5 replications and 2 plants per plot. The total number of fruits, total number of seeds, total fruit weight, mean fruit weight, and number of seeds per fruit of the accessions were evaluated by monthly sampling. Additionally, seed biometry was assessed in a sample of 30 seeds per accession. Repeatability coefficients were estimated by analysis of variance, principal components and structural analysis. The principal component method based on the covariance matrix was the most appropriate for establishing repeatability estimates of sacha inchi, due to the cyclical nature of the crop. Superior genotypes of the species can be selected for yield-related traits with about 90% accuracy, from 5 harvests (months) onwards. To ensure this accuracy level, it would be necessary to evaluate a minimum of 5 and 25 fruits to determine mean fruit weight and number of seeds per fruit, respectively, and 39 seeds would be required to evaluate the biometric traits.


2014 ◽  
Vol 44 (6) ◽  
pp. 1031-1036 ◽  
Author(s):  
Artur Mendes Medeiros ◽  
Rosana Rodrigues ◽  
Leandro Simões Azeredo Gonçalves ◽  
Cláudia Pombo Sudré ◽  
Hérica Santos de Oliveira ◽  
...  

Heterosis has been exploited in Capsicum annuum commercial hybrids; however, the use of heterosis in C. baccatum still remains to be explored, and studies related to the genetics and breeding of this species are scarce. The present study aimed to estimate the combining ability of five parents of C. baccatum var. pendulum , representatives of two distinct types of fruits (namely, lady's finger and cambuci), to calculate heterosis and to evaluate the agronomic potential of the hybrids for yield and fruit quality. The hybrids were produced from a complete diallel without reciprocals. The parents and hybrids were evaluated under field conditions in a randomized block design with three replications, and the following traits were assessed: number of fruits per plant, fruit weight, yield per plant, fruit length, fruit diameter and soluble solids. All traits were significant for general and specific combining ability, indicating that additive and non-additive effects are involved in the genetic control of these traits. The hybrid combinations between the types lady's finger and cambuci provided elongated fruits with smaller diameters and greater weight compared with the parents of the cambuci type. However, these factors did not lead to a significant increase in the yield per plant due to the decreased number of fruits except in hybrid UENF 1616 x UENF 1732. Considering only the parents and hybrids within each type of fruit, the genitor UENF 1624 (lady's finger) and the hybrid UENF 1639 x UENF 1732 (cambuci x cambuci) stood out for achieving a high yield per plant.


GEMA AGRO ◽  
2018 ◽  
Vol 23 (1) ◽  
pp. 11
Author(s):  
Made Sri Yuliartini ◽  
Ketut Agung Sudewa ◽  
Luh Kartini ◽  
Ersa Remi Praing

The purpose of this research is to determine the effect of compost and NPK Phonska fertilizer application to the growth and yield of okra plants, and to get optimum dose. This research was conducted in experimental garden of Agricultural Faculty of Warmadewa University. The design used in this research is factorial randomized block design (RAK) consisting of two treatments: compost fertilizer and NPK Phonska fertilizer. The interaction treatment between doses of compost fertilizer with NPK Phosnka and single treatment of NPK Phonska have no significant effect on all observed variables. The treatment of compost fertilizer dosage have no significant to effect foe leaf number and dry weight of oven fruit, but it had significant effect to the weight of fresh and dried weight of oven stover and very significant effect on the variables of plant height, the number of fruit and the weight of fresh fruit. The dosage of compost fertilizer 8 ton ha-1 to got the highest fresh weight of fruit per plant which is 380,42 g, an increase of 44,05% if compared with the lowest fresh fruit weight per plant obtained in the treatment without compost 0 tons ha- ˡ of 264.08 g. The results of the distribution of NPK Phonska at different doses have no significant effect on one another . However, , the highest fresh fruit weight was obtained at NPK treatment at 400 kg ha-1 treatment ie 351,75g. This increased by 7.02% when compared with the freshest weight of lowest fruit obtained at 200 kg ha-1 treatment ie 328,67 g.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Kajal Bhardwaj ◽  
Sonia Khaidem ◽  
Aman Deep Ranga ◽  
Mandakemohekar A. H.

An experiment was conducted during the Monsoon season of 2020 to evaluate twenty genotypes of okra for agro-morphological traits collected from Krishi Vigyan Kendra (KVK) for yield and its contributing characters under field conditions at Jawali, District Kangra, Himachal Pradesh. High significance of analysis of variation showed the existence of large variability among the genotypes. The experiment was laid out in randomized block design with three replications and 10 plants/row. Highest GCV and PCV was found for 100 seed weight followed by days to first flowering node, yield per plant. While the lowest was observed for fruit girth, plant height and fruit length which determines the negligible influence of environment on the different traits. High broad sense heritability was observed for days to first flowering node and genetic advance was recorded highest for yield per plant. Average fruit weight, fruit length and fruit girth were in positive and significant relationship with yield per plant. Principal component analysis revealed the first four major principal components having Eigen value >1 which contributed 82.693% of the total variation. Cluster analysis suggested that the hybridization of cluster I with cluster II would be beneficial for developing varieties in different parts of India because of the variation present between both the clusters.


Author(s):  
Yrle da Rocha Fontinele ◽  
Vanderley Borges dos Santos ◽  
Luan de Oliveira Nascimento ◽  
Antônio Carnaúba de Aragão ◽  
Matheus Matos do Nascimento ◽  
...  

Genetic variability is the main characteristic when seeking to select promising genotypes for plant breeding. Thus, the objective of this work was to investigate the genetic variability in agronomic and morphological characteristics of traditional varieties of maize, in addition to determining the degree of association and the selection of variety and promising characters to be explored in programs of genetic breeding of Creole maize. The experiment was conducted at the Federal University of Acre (UFAC), Rio Branco - Acre, in the 2017/2018 harvest period. A randomized block design was used, with five replications. The treatments were four varieties of Creole maize (V1, V2, V3 and V4) from the Vale do Juruá region and another hybrid cultivar LG 3040 (HI). The morpho-agronomic characteristics were evaluated in the useful area of the plots: days to silking (DS), days to anthesis (DA), plant height (PH) and height ear insertion (HEI), stem diameter (SD), mass of ear (ME), length ear (LE), diameter ear (DE), total grain mass (TGM), mass of 100 grain (M100G), grain moisture (GM) and grain productivity (GP). The data were subjected to analysis of variance and comparison of means. The values of genotypic and phenotypic variance were also estimated, heritability in the broad sense, selection accuracy, phenotypic, genotypic and environmental correlation, in addition to the principal component analysis (PCA). Variations in characteristics were found between the varieties of Creole maize and their interrelations, showing greater influence of ME, PH, TGM, M100G, DE and GP in the expression of the phenotype. Therefore, it is concluded that there is genetic variability in the characteristics evaluated, with emphasis to V4 that showed superior performance allowing direct selection of the characteristics SD, ME, TGM and M100G to be incorporated into an breeding program.


2021 ◽  
Vol 5 (2) ◽  
pp. 105-113
Author(s):  
Elisabet Restiana Jaya ◽  
Yohanes Parlindungan Situmeang ◽  
Anak Agung Sagung Putri Risa Andriani

Abstract This study aims to determine the effect of biochar dose from urban waste and the concentration of eco-enzymes and their interactions on the growth and yield of shallots. The research was carried out in the greenhouse of the Faculty of Agriculture,Warmadewa University with an altitude of 25 m above sea level, and took place from April to June 2021. This study used a factorial randomized block design method consisting of two factors. The first factor is the dose of biochar with 4 levels (0; 5; 10; and 15 tons ha-1), while the second factor is the concentration of eco-enzyme which consists of 4 treatment levels (0; 7.5; 15.0; and 22.5 ml l-1). The results showed that the interaction between the dose of biochar and the concentration of eco-enzyme had a significant effect on the fresh weight of the stover per clump and had a very significant effect on the dry weight of the stover per clump, but had no significant effect on other variables. The treatment dose of biochar and eco-enzyme had a very significant effect on all observed variables. The results showed that the biochar and eco-enzyme treatments had a very significant effect on all observed variables. The application of biochar and eco-enzyme has a very significant effect on all observed variables. The provision of biochar treatment from urban waste was able to increase the fresh weight of tubers in the 15-ton ha-1 treatment, which was an increase of 39.40% compared to without biochar, while the highest fresh fruit weight was obtained in the eco-enzyme treatment of 22.5 ml l-1, which increased by 29.77% compared without eco-enzyme. Keywords:  Biochar; urban waste; eco-enzyme; shallots  


2017 ◽  
Vol 47 (4) ◽  
Author(s):  
Adielle Rodrigues da Silva ◽  
Simone Alves Silva ◽  
Vanessa de Oliveira Almeida ◽  
Gilmara de Melo Araújo ◽  
Carlos Alberto da Silva Ledo

ABSTRACT: As castor bean (Ricinus communis L.) reveals immense adaptability to various ecological conditions and due to its socioeconomic significance, new studies have emerged primarily to develop more productive cultivars to suit different regions in Brazil. This study aimed to confirmthe correlations and direct and indirect effects of the morphoagronomic descriptors on castor bean productivity, employing correlation studies and track analysis. Between 2014 and 2015, experiments utilizing the randomized block design were performed, with four replications, which included 208 treatments involving pedigree and parental lines of castor bean, drawn from the germplasm bank of the Universidade Federal do Recôncavo da Bahia. Variables in the correlation analysis included primary racemic insertion, stem diameter, number of stem internodes, plant flowering, plant height, racemic length, number of fruits per raceme, fruit weight per raceme, seed yield per fruit and productivity. Correlations among the variables analyzed were imposed, via track analysis, on the direct and indirect influences of the morphoagronomic descriptors on productivity. The most direct and positively influential descriptors included fruit weight per raceme and number of seeds per raceme; the most direct albeit negatively influential descriptors are the number of internodes on the stem and flowering. Therefore, lines with less number of internodes and requiring fewer days to bloom are more highly productive. These descriptors can thus effectively identify the productive lines.


2006 ◽  
Vol 12 (1) ◽  
pp. 57
Author(s):  
Fernando Borrego ◽  
Alfonso López ◽  
José M. Fernández ◽  
Margarita Murillo ◽  
Sergio A. Rodríguez ◽  
...  

With the objective to determine correlations between yield and principal components of variation of cantaloupe genotypes, in Ramos Arizpe, Coahuila, 12 genotypes were established, in a Complete Randomized Block design with four replications. An experimental plot of two rows five meters long sown at double hill. The genotypes studied were: hybrids: Primo, Pronto, Challenger, Cheyenne, Hi-Line, Cruiser, Durango, Apache, Laguna, Caravelle and Main Pack, and the variety Top Mark, as a control. The variables evaluated were: yield (11 variables: quantitative and qualitative); phenology (three variables); agroclimatic (five variables) and physiologicals (four variables); significant and negative correlations (p<0.05) were found between yield and earliness, mean fruit weight, number of fruits, and between fruit number and fruit lenght. The most correlated physiological variables were photosynthesis and water use efficiency. With the principal component analysis up to the component three 65 % of variance is explained. Component one showed a high value on yield, weight and size characteristics, and called as “Yield Quantitative Characteristics”. In component two, “Earliness Component” showed the higher variations. Component three to six, explain similar proportions the other variables, being the sixth where was found the highest Photosynthesis. Multiple linear regression was significant (p<0.057), due to field conditions, can be considered adequate. Yield in t/ha is explained by a multiple linear equation (r2=0.99) of 10 variables.


Author(s):  
Sujarwo Sujarwo ◽  
Irine Ike Praptiwi ◽  
Dirwan Muchlis

This research aims to know the influence of the concentration of organic fertilizer of soil on the production of King grass (Pennisetumpurpuroides). This research using methods of randomized block design 3x2 treatment with 3 replicates. Treatment of I = K1L1 (clay fertilizer dose is 6 kg/plot), II treatment = K1L2 (clay fertilizer dose is 12 kg/plot), treatment of the III = K1L3 (clay fertilizer dose 18 kg/plot). The parameters observed were brangkas wet weight (height of plants, number of stem per block, number of leaves, stem diameter, heavy wet per block), heavy wet leaves and dry weight of leaves. The results of the study increased the wet weight and dry weight of K1L3 with an average weight of 3,200 grams and dry weight. 440.1 grams. Key Word  : Organicfertilizer; soil type; production; king grass


2018 ◽  
Vol 2 (3) ◽  
pp. 59-65
Author(s):  
A.A. Ngurah Mayun Wirajaya ◽  
Made Sri Yuliartini ◽  
Luh Kartini

The objectives of this study are for the type of manure that is most appropriate for the improvement of fertility and the generation of the period of nutrients and the best time of pruning for the growth and yield of chili. This research is a Factorial experiment, with Basic. Design of Randomized Block Design (RBD) with 2 factors that tried and done in glass house lasted from July to November 2017. In the first factor type of manure from level 4: K 0 = no fertilizer, K 1 = cow manure, K2 = chicken manure laying hens, K 3 = rabbit manure. The dose of each fertilizer 20 tons ha-1. The second factor with 3 levels: P 0 = without trimming, P 1 = pruned apical shoots age 8 days after planting, P2 = pruning apical shoots age 16 days after planting. From the experiment will be obtained 12 treatment combinations and will be repeated 3 times. The interaction between several types of manure and apical trimming (K x P) was markedly significant (P <0.05) to the variable wet weight of leaves and leaf dry weight. The interaction is very important (P <0.01) against the maximum leaf number variables, wet root weight, root dry weight, and fresh fruit weight. Fresh weight of fruit obtained on interaction with manure by pruning apical part 16 days after planting (K3P2) of 47.67 g and when compared to the combination of no fertilizer and without pruning (K0P0) of 37.80 which can be increased 26, 11%.


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