scholarly journals Anticipated selection for intrapopulation breeding of passion fruit

2017 ◽  
Vol 39 (2) ◽  
pp. 143 ◽  
Author(s):  
Natan Ramos Cavalcante ◽  
Willian Krause ◽  
Alexandre Pio Viana ◽  
Celice Alexandre Silva ◽  
Keithi Karla Xavier Porto ◽  
...  
Keyword(s):  
Fruit Production ◽  
Passion Fruit ◽  
First Year ◽  
State University ◽  
Mato Grosso ◽  
Coincidence Index ◽  
Selection For ◽  
Fruit Mass ◽  
Selection Of ◽  
Production Characteristics

 The aim of this work was to verify the efficiency of the anticipated selection of superior plants in intrapopulation breeding of passion fruit. The experiment was conducted at the Mato Grosso State University experimental area. Eight populations were evaluated. Planting was carried out in August 2010 following the randomized blocks experimental design, with ten repeats and ten plants per plot. The production characteristics of mass and number of fruits were evaluated from data obtained from two cultivation periods, the first year and the full two-year cycle of culture. Estimates of genetic parameters indicate the possibility of selection gains. The accuracies of fruit production, fruit number and fruit mass characteristics had high magnitude, independent of the selection cycle. Coincidence index estimates were high for all characteristics. Based on the results, early selection (first year) was efficient and reduced the time of selection for the best plants and can be used for passion fruit breeding. 

scholarly journals Selection of indexes to evaluate the genetic variability aiming ornamental use of peppers accessions

2018 ◽  
Vol 24 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Petterson Baptista Da Luz ◽  
Alessandro Aparecido Brito Dos Santos ◽  
Valdete Campos Ambrosio ◽  
Leonarda Grillo Neves ◽  
Armando Reis Tavares
Keyword(s):  
Genetic Variability ◽  
Ornamental Plants ◽  
Germplasm Collection ◽  
State University ◽  
Breeding Programs ◽  
Mato Grosso ◽  
High Heritability ◽  
Selection For ◽  
Germplasm Banks ◽  
Selection Of

There are few varieties of commercial peppers for landscape use, although Capsicum germplasm banks in Brazil have accesses that can be used in breeding programs to create new ornamental peppers. The present study aims evaluate the genetic variability of pepper accesses in relation to their ornamental potential by a selection of indices. A total of 55 peppers accessions were used in the germplasm collection of Mato Grosso State University. The heritability of the studied variables showed that all the variables have high heritability. Fruit length and weight showed the highest heritability values with 99.88% and 99.67%, respectively. The selection based on Summa Rank-Based Index would result in plants with long fruits and peduncles, fruits with higher weight and wider, with leaves and petioles with longer lengths, and a reduction of other characteristics. The Base and the Classical Indexes are significant, as it would result in compact canopy and reduced plants, desired characteristics for ornamental plants. The index based on Summa Rank-Based Index permitted a great gain in pepper selection for ornamental purpose.

Evaluation and selection of bread wheat (Triticum aestivum L.) for preharvest sprouting tolerance

1995 ◽  
Vol 46 (3) ◽  
pp. 463 ◽  
Author(s):  
RM Trethowan
Keyword(s):  
Bread Wheat ◽  
Seed Dormancy ◽  
Triticum Aestivum L ◽  
Preharvest Sprouting ◽  
First Year ◽  
Falling Number ◽  
Selection For ◽  
Visual Measurements ◽  
Selection Of ◽  
Rain Simulator

This paper examines the success of selection for preharvest sprouting tolerance in white-grained bread wheat using a standard wetting treatment, germination of hand-threshed seed and falling number measurements. The rain simulator was usefull in shifting the population mean of field grown material towards higher levels of tolerance in successive years; however, large genotype x year interactions in material sown under rain protection did not allow accurate assessment of individual genotypes. The most accurate assessments were achieved using falling number measurements (h2 = 80.7%) and hand-threshed seed germinations (h2 = 38.4%), where no genotype x year interactions were recorded. Seed dormancy (determined from hand threshed grain) correlated significantly with change in falling number following 3 days' treatment in the rain simulator ( r = -0-56**). Visual measurements scored in the rain simulator, however, did not correlate significantly with seed dormancy in the first year (r = 0.20) but correlated strongly in the second (r = 0.73***). In comparisons of the same test between years, falling number (without rain treatment) and seed dormancy were significantly correlated (r = 0.68* and 0.90***, respectively), whilst visual scores of sprouting showed no association (r = -0.03).

scholarly journals Selection in the First Year of Passion Fruit Production: A Potential Strategy for Breeding

2018 ◽  
Vol 10 (11) ◽  
pp. 290
Author(s):  
Luciana Domiciano Silva Rosado ◽  
Renato Domiciano Silva Rosado ◽  
Rosana Gonçalves Pires Matias ◽  
Carlos Eduardo Magalhães dos Santos ◽  
Claudio Horst Bruckner ◽  
...  
Keyword(s):  
Fruit Production ◽  
Passion Fruit ◽  
First Year ◽  
Aggregate Production ◽  
Selection Processes ◽  
Fruit Cultivation ◽  
Crop Cycle ◽  
Second Year ◽  
Potential Strategy

The objective was to compare the results obtained in the first and second year of production, with the aggregate production at the end of the two years of cultivation to determine the stage of the crop cycle most suitable for selection processes. We evaluated the fruits of 26 German-sib progenies of passion fruit during the peak production of the 1st year (December/2004) and the 2nd year (April/2006). There was little or no difference between the means of selected families in the two production years in terms of the evaluated traits. Selection should therefore be performed in the fist production year to reduce cultivation costs, making passion fruit cultivation more economically feasible.

scholarly journals Passion fruit production under different swine wastewater doses treated in a biodigester

2021 ◽  
Vol 29 ◽  
pp. 263-274
Author(s):  
Manuel Antonio Navarro Vásquez ◽  
Ana Maria Sousa Santos ◽  
Danilo Francisco de Oliveira ◽  
Edilza Maria Felipe Vásquez ◽  
Francisco Gauberto Barros dos Santos ◽  
...  
Keyword(s):  
Block Design ◽  
Fruit Production ◽  
Biological Properties ◽  
Swine Wastewater ◽  
Animal Origin ◽  
First Year ◽  
Beneficial Effects ◽  
Randomized Block Design ◽  
Set Up ◽  
Fruit Mass

Soil fertilization using materials of animal origin, such as biofertilizers, is an important practice to maintain productive soil, as they provide beneficial effects on soil physical, chemical, and biological properties. This study aimed to evaluate the number of fruits, fruit mass, and yield of yellow passion fruits in the first year of cultivation with the application of swine wastewater (SW) treated in a biodigester. The experiment was set up at the experimental area belonging to IFCE Crato, CE, Brazil, with a spacing of 5.0 m between plants and 3.0 m between rows, using the espalier system of training and drip irrigation. The experiment was conducted in a randomized block design, with five treatments and four replications. Treatments consisted of five SW doses (D1 = 0, D2 = 0.50, D3 = 1.00, D4 = 1.50, and D5 = 2.00 L plant?1) applied at two phenological stages of the crop. The results were subjected to analysis of variance at a 5% significance, followed by the regression test. The increased SW doses influenced all the studied variables, following the linear and quadratic regression models, except for the mean fresh fruit mass. The highest yield was achieved with the highest studied dose, being an interesting alternative for recommendation to farmers in the region.

scholarly journals PRODUCTIVITY, FRUIT PHYSICOCHEMICAL QUALITY AND DISTINCTIVENESS OF PASSION FRUIT POPULATIONS

2016 ◽  
Vol 38 (4) ◽  
Author(s):  
NATAN RAMOS CAVALCANTE ◽  
WILLIAN KRAUSE ◽  
JOICE FERNANDES DE CARVALHO ◽  
MARIA KERHOLAYNE PEREIRA ROCHA ◽  
EDNAMAR GABRIELA PALÚ ◽  
...  
Keyword(s):  
Block Design ◽  
Physicochemical Characteristics ◽  
Passion Fruit ◽  
State University ◽  
Dissimilarity Matrix ◽  
Mato Grosso ◽  
Matrix Groups ◽  
Physicochemical Quality ◽  
High Productivity ◽  
Randomized Block Design

ABSTRACT The productivity and physicochemical quality evaluation is important, as it identifies superior populations. However, launching products requires following the descriptors according to DHE test instructions. Thus, this study aimed to evaluate three passion fruit populations with high productivity and physicochemical quality characteristics for commercial launch. The experiment was conducted at the State University of Mato Grosso experimental area, located in the municipality of Tangará da Serra, MT. The experimental design was complete randomized block design with four replicates and ten plants per plot. The physicochemical characteristics were submitted to analysis of variance and compared by the Tukey test. For the distinctiveness test, 25 descriptors were evaluated, where quantitative data have been converted into multicategoric data to obtain the dissimilarity matrix. From the dissimilarity matrix, groups were formed using the Tocher and UPGMA methods, Livestock and Supply Department. The highest productivity and number of fruits were verified for BRS Rubi Cerrado cultivar and UNEMAT S10 population. Populations and cultivars presented physicochemical characteristics that meet the required quality for both fresh consumption and industry use. Based on the distinction test among genotype, it was observed that the descriptors were effective for population differentiation. UNEMAT S10 population has characteristics that distinguish it from other cultivars and populations evaluated, and presents high agronomic performance; therefore, it can be launched as a commercial cultivar.

scholarly journals Genetic Variation and Response to Selection for Early Season Fruit Production in California Strawberry Seedling (Fragaria ×ananassa Duch.) Populations

2005 ◽  
Vol 130 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Douglas V. Shaw ◽  
Kirk D. Larson
Keyword(s):  
Genetic Variance ◽  
Total Yield ◽  
Selection Response ◽  
Fruit Production ◽  
Fragaria Ananassa ◽  
Early Season ◽  
Selection For ◽  
Selection Intensities ◽  
Opportunity For Selection ◽  
Selection Of

The genetic opportunity for selection of early fruiting strawberry cultivars was evaluated using seedling populations from the Univ. of California (UC) breeding program in three years. Narrow-sense heritabilities for early season yield and for the proportion of an individual's total yield expressed early were moderate (h2 = 0.24-0.53) and broad-sense heritabilities were slightly larger (H2 = 0.31-0.70), suggesting the presence of some nonadditive genetic variance for these traits. These two traits were genetically correlated with each other (rg = 0.78-0.98), but only early yield was consistently genetically correlated with seasonal yield (rg = 0.52-0.82). Selection was performed for each trait using an index on full-sib family means and individual phenotypic values in two of the three years, and predicted response was compared with that obtained using vegetatively propagated runner plants from selected genotypes in the subsequent fruiting season. Statistically significant (P < 0.05) selection response was obtained in one of two years for each trait, and combined analysis demonstrated highly significant (P < 0.01) response for both traits. However, realized response over all traits and years was just 27.3% of that predicted based on the estimated heritabilities and applied selection intensities. These results suggest that selection for early yield should be based at least in part on runner plant evaluations rather than exclusively on seedling performance.

scholarly journals SELECTION OF COFFEE PROGÊNIES FOR RESISTANCE TO LEAF RUST AND FAVORABLE AGRONOMIC TRAITS

2019 ◽  
Vol 14 (2) ◽  
pp. 173
Author(s):  
Rafael Almeida Dias ◽  
Marcelo Resende Ribeiro ◽  
Alex Mendonça Carvalho ◽  
Cesar Elias Botelho ◽  
Antonio Guimarães Mendes ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Block Design ◽  
Fruit Production ◽  
Direct Selection ◽  
Coffee Rust ◽  
Selection Gain ◽  
Randomized Complete Block Design ◽  
Selection For ◽  
Productivity Assessment ◽  
Selection Of

The objective of this study was to select coffee progenies with better assessment that can result in coffee rust resistant cultivars and better agronomic characteristics than the traditional ones. The essay was performed at the EPAMIG experimental field in Patrocínio, state of Minas Gerais, Brazil. Twenty-five progenies in the F3 generation were studied.  The experiment was set in a randomized complete block design with three replicates and ten plants per plot, arranged in rows at 3.5x0.7m. Productivity assessment, fruit production, in liters of “farm coffee” per plot, bean rating in a sieve (16 or above), and plant vigor were accessed in three different harvest seasons (2011/2012 harvest to 2014/2015 harvest), and coffee rust incidence and severity were then evaluated for 2016. The production profit estimation through the selection was also assessed, by the gain of direct selection for each characteristic, when compared to the rank addition. Progenies 13 (Icatu V. IAC 4040 x IAC 5002) and 3 (Icatu A. IAC 2944 x IAC 5002) were promising in generation advance, for being among the five most productive progenies. The selection gain reached by direct selection was superior than the gain of the total rank additions.

Self-government of russian and chinese students, adapting to study at the university

2020 ◽  
Author(s):  
E. I. Petanova ◽  
Keyword(s):  
Chinese Students ◽  
Cross Cultural ◽  
First Year ◽  
State University ◽  
First Year Students ◽  
Cross Cultural Study ◽  
Peking University ◽  
High Level ◽  
The University ◽  
Selection Of

This text presents the results of cross-cultural study of the structure and degree of self-government on the example of Russian and Chinese first — year students: 93 Russian students studying at St. Petersburg state University; 60 Russian first-year students of Peking University, and 127 Chinese students of the faculty of Economics of Peking state University. The General tendencies for all respondents in the content of the most expressed and less formed operations of self-government of respondents are revealed. It was found that only 5 % of all respondents have a high level of selfgovernment. The highest rates of students were found in the operation «forecasting», and the lowest were the indicators for the operation «selection of the criterion for assessing the quality.» Significant differences between the compared groups of first-year students were found by the operation «quality assessment criteria» in Russian students studying at St. Petersburg state University (at home) and abroad (at Peking University).

scholarly journals Molecular and Aggressiveness Characterization of Isolates of Fusarium solani and Fusarium oxysporum f.sp. passiflorae Associated to Passion Fruit Wilting

2019 ◽  
Vol 11 (3) ◽  
pp. 407
Author(s):  
Thalita N. Marostega ◽  
Lizandra P. Lara ◽  
Daiani da S. de Oliveira ◽  
Antonio M. Chimello ◽  
Thiago Alexandre S. Gilio ◽  
...  
Keyword(s):  
Fusarium Solani ◽  
Passion Fruit ◽  
Gene Pools ◽  
Breeding Programs ◽  
Mato Grosso ◽  
Collar Rot ◽  
Molecular Variability ◽  
Selection Of ◽  
Sour Passion Fruit

This work was carried out with the objective of performing a molecular and aggressiveness characterization of F. solani and F. oxysporum f.sp. passiflorae collected in the Pantanal, Cerrado and Amazon biomes. We selected the most aggressive isolates for use in breeding programs aiming resistance to Collar Rot and Fusariosis. For inoculation of the isolates of F. oxysporum f.sp. passiflorae the washed root method was used. The molecular characterization of the isolates was carried out by partial sequencing of the Transcribed Internal Spacer of the rDNA region. The isolates of F. solani formed two distinct groups in relation to aggressiveness. Among all isolates, FSUNEMAT 40 and FSUNEMAT 46 were the most aggressive. The model with K=2 was taken as the best model to explain the genetic structure of the F. solani populations, with clear combinations of genes from both gene pools. There were three groups with respect to the aggressiveness of the isolates of F. oxysporum f.sp. passiflorae, with the isolated FOUNEMAT 22 being the most aggressive. In view of these results, the isolates of F. solani collected in P. edulis in the state of Mato Grosso presented a high molecular variability independent from the biome of origin, and this was also observed in the tests of aggressiveness. The results indicate the need to consider the molecular variability and the aggressiveness of the pathogens in the evaluation of genotypes of sour passion fruit in programs of selection of resistant cultivars.

scholarly journals Nursery Selection for High Early Fruit Yield in Subtropical Strawberries

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 548E-549
Author(s):  
P.J.S. Lopez ◽  
C.K. Chandler
Keyword(s):  
Total Yield ◽  
Fruit Production ◽  
Fruit Yield ◽  
Plant Production ◽  
First Year ◽  
Early Season ◽  
Factorial Mating ◽  
Selection For ◽  
Factorial Mating Design ◽  
Strawberry Cultivars

Development of new strawberry cultivars for winter fruit production in Florida entails growing of hybrid seedlings in a nursery in the summer of the first year for runner plant production. Two runner plants are taken from each seedling and planted in the fruiting field in the fall. An experiment was conducted to see if it is possible to predict which genotypes in the nursery will have the highest early season fruit yield. Seedlings from 24 families from a 6 × 4 factorial mating design were grown in a nursery. From each family, daughter plants of 20 seedlings with the highest vigor and 20 randomly picked seedlings were then evaluated in the fruiting field. Plants from selected (high-vigor) seedlings were more vigorous, but had fewer crowns and runners, than unselected plants. More inflorescences were counted in selected plants than in unselected plants during the second week of January. This could account for higher early yield (yield at the end of January) and total yield (yield at the end of March) in selected than in unselected plants.

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