scholarly journals 041 Okra (Abelmoschus esculentus) Germplasm Evaluation for Earliness in Fruiting and High Fresh Fruit Yield

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 448B-448
Author(s):  
Margaret J. Makinde ◽  
Adenike O. Olufolahji ◽  
Olanrewaju A. Denton
Keyword(s):  
Fruit Yield ◽  
Fresh Fruit ◽  
Germplasm Evaluation ◽  
Abelmoschus Esculentus ◽  
Drought Tolerant ◽  
Drawing Ability ◽  
Short Stems ◽  
High Degree ◽  
New Cultivars

A total of 45 varieties of okra (Abelmoschus esculentus) were evaluated for earliness in fruiting and high fruit yield. In Nigeria selection in okra is for large, spiny fruit with high drawing ability. So far the variety (cultivar) NHAC 47-4 has been well-accepted by both the Nigerian farmers and consumers. It fruit within 42 days and draws and retains fresh color when boiled. These new cultivars, NHAC147 and NHAC 148, were found to fruit within 38 to 40 days and they are of comparable yield of up to 40 fruit per plants. They were found to be drought-tolerant and carry fruit of up to five of same age and size-high degree of uniformity. They are therefore being recommended because they have short stems and NHAC148 has fewer spines than NHAC47-4 AND NHAC 147.

scholarly journals Fruit yield of strawberry stock plants after runner tip production by different cultivars

2013 ◽  
Vol 31 (3) ◽  
pp. 375-379 ◽  
Author(s):  
Miriane Dal Picio ◽  
Jerônimo Luiz Andriolo ◽  
Djeimi Isabel Jänisch ◽  
Odair José Schmitt ◽  
Maíne Alessandra Lerner
Keyword(s):  
Root Nodule ◽  
Cropping System ◽  
Fruit Production ◽  
Fragaria X Ananassa ◽  
Fruit Yield ◽  
Fresh Fruit

The main objective of this research was to determine fruit yield of strawberry (Fragaria x ananassa) stock plants in a cropping system after producing runner tips and plug plants. Micropropagated stock plants were planted in a soilless growing system. Runner tips bearing at least one visible root nodule were harvested at 43, 66 and 87 days after planting, rooted and planted as multiplied stock plants for producing plug plants. Treatments consisted of micropropagated stock plants of cultivars INIA Arazá, INIA Guenoa and INIA Yvapitá, planted on October 1st, 2008 (T1); multiplied stock plants planted on November 28th (T2) and on December 21st, 2008 (T3), and on January, 10th, 2009 (T4). On May 22nd, 2009, stock plants were defoliated and plug plants of the same cultivars were planted as control for fruit production. Early fruit yield and number of fruits were higher on stock plants, but fresh fruit yield was higher on control plants. Total fruit yield and number were higher on stock plants of 'INIA Arazá' and 'INIA Guenoa'. We concluded that strawberry stock plants reach higher early and total fresh fruit yield than plug transplants in the second cropping year after producing runner tips in a soilless growing system. Therefore, plants should not be discarded after the production of runner tips.

scholarly journals Artificial Neural Network Modeling of Greenhouse Tomato Yield and Aerial Dry Matter

Agriculture ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 97 ◽  
Author(s):  
Kelvin López-Aguilar ◽  
Adalberto Benavides-Mendoza ◽  
Susana González-Morales ◽  
Antonio Juárez-Maldonado ◽  
Pamela Chiñas-Sánchez ◽  
...  
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Dry Matter ◽  
Fruit Yield ◽  
Fresh Fruit ◽  
Neural Network Modeling ◽  
Peat Moss ◽  
Tomato Crop ◽  
Marquardt Algorithm ◽  
Artificial Neural

Non-linear systems, such as biological systems, can be simulated by artificial neural network (ANN) techniques. This research aims to use ANN to simulate the accumulated aerial dry matter (leaf, stem, and fruit) and fresh fruit yield of a tomato crop. Two feed-forward backpropagation ANNs, with three hidden layers, were trained and validated by the Levenberg–Marquardt algorithm for weights and bias adjusted. The input layer consisted of the leaf area, plant height, fruit number, dry matter of leaves, stems and fruits, and the growth degree-days at 136 days after transplanting (DAT); these were obtained from a tomato crop, a hybrid, EL CID F1, with indeterminate growth habits, grown with a mixture of peat moss and perlite 1:1 (v/v) (substrate) and calcareous soil (soil). Based on the experimentation of the ANNs with one, two and three hidden layers, with MSE values less than 1.55, 0.94 and 0.49, respectively, the ANN with three hidden layers was chosen. The 7-10-7-5-2 and 7-10-8-5-2 topologies showed the best performance for the substrate (R = 0.97, MSE = 0.107, error = 12.06%) and soil (R = 0.94, MSE = 0.049, error = 13.65%), respectively. These topologies correctly simulated the aerial dry matter and the fresh fruit yield of the studied tomato crop.

scholarly journals Pathogenicity of Meloidogyne Incognita Race 1 on Tomato as Influenced by Different Arbuscular Mycorrhizal Fungi and Bioformulated Paecilomyces Lilacinus in a Dysteric Cambisol Soil

2013 ◽  
Vol 53 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Idorenyin Asukwo Udo ◽  
Michael Ifeanyichukwu Uguru ◽  
Rufus Omemaramadu Ogbuji
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Egg Production ◽  
Arbuscular Mycorrhizal ◽  
Fruit Yield ◽  
Fresh Fruit ◽  
Paecilomyces Lilacinus ◽  
Yield Enhancement ◽  
Egg Mass ◽  
Race 1

Abstract A greenhouse experiment was conducted to investigate the single and combined effects of different arbuscular mycorrhizal fungi (AMF) and bioformulated Paecilomyces lilacinus against M. incognita race 1 on tomato. Dysteric Cambisol soil was used. The experiment took place in Calabar, Cross River State, Nigeria. The experiment was laid out as a 3x6 factorial in a completely randomized design (CRD) with three replications. Three applications of the bionematicide were combined with five species of AMF plus an uninoculated control. The results indicated that AMF species differed significantly (p ≤ 0.05) in their efficacy of gall and egg mass inhibition, tomato root colonization rate as well as growth and fresh fruit yield enhancement. Glomus etunicatum and G. deserticola were the most efficient species. Two applications of the bionematicide more significantly (p ≤ 0.05) reduced galling and egg production than a single application. Individual combinations of two AMF (G. etunicatum and G. deserticola) with a double application of the bionematicide, resulted in the greatest gall and egg mass inhibition and consequently the greatest growth and fresh fruit yield enhancement.

scholarly journals Warm Climate Production Guidelines for Angelonia

EDIS ◽  
1969 ◽  
Vol 2004 (10) ◽  
Author(s):  
Richard Schoellhorn ◽  
Erin Alvarez
Keyword(s):  
Warm Season ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Publication Date ◽  
Original Publication ◽  
Cut Flower ◽  
Warm Climate ◽  
University Of Florida ◽  
Drought Tolerant ◽  
New Cultivars

Angelonia is a popular warm-season annual that has a renewed interest for growers and consumers due to the development of several new cultivars. It is excellent for use in the landscape and in large containers, and is becoming more popular for cut flower use. Known as the summer snapdragon, this plant does best in warm climates, is drought tolerant, and really shines when snapdragons and other spring annuals begin to wither. Older varieties vary in performance. Most are treated as annuals, but in all Florida zones they can be perennial if the winter is mild. This document is ENH 877, one of a series of the Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date October 15, 2002. https://edis.ifas.ufl.edu/ep134

scholarly journals DENSELY PLANTED OKRA FOR DESTRUCTIVE HARVEST

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 438a-438
Author(s):  
Yaying Wu ◽  
Brian A. Kahn ◽  
John B. Solie
Keyword(s):  
Plant Density ◽  
Fruit Weight ◽  
High Density ◽  
Fruit Yield ◽  
Abelmoschus Esculentus ◽  
Mature Fruit ◽  
Marketable Yield ◽  
Harvest Timing ◽  
Plant Arrangement ◽  
Marketable Fruit

We are developing a mechanical harvest system for okra [Abelmoschus esculentus (L.) Moench]. Our objective was to identify a high-density (HD) plant arrangement and a harvest timing that would maximize marketable fruit yield per hectare with a destructive harvest. We compared destructively harvested plants grown at spacings of (in cm) 15 × 15, 23 × 23, and 30 × 30 with hand-harvested plants grown at 90 × 23 cm. Within HD treatments, marketable fruit weight increased inconsistently as plant density increased. The 30 × 30-cm spacing was not dense enough. Branching decreased and the position of the first marketable fruit attachment moved up as plant density increased. Delaying destructive harvest until many over-mature fruit were present often did not increase marketable fruit yield and always reduced the proportion of total harvested fruit weight due to marketable fruit. Overall, percentages of marketable yield obtained by destructive harvests of HD plants were low compared to the cumulative marketable yield from control plants. However, the labor-saving potential was high. A prototype machine for harvest of HD okra has been developed, and further testing is planned.

scholarly journals Unraveling the complex story of intergenomic recombination in ABB allotriploid bananas

2019 ◽  
Author(s):  
Cenci Alberto ◽  
Sardos Julie ◽  
Hueber Yann ◽  
Martin Guillaume ◽  
Breton Catherine ◽  
...  
Keyword(s):  
Developing Countries ◽  
Chromosome Structure ◽  
Snp Markers ◽  
Staple Food ◽  
Good Source ◽  
Ancestral Origin ◽  
Drought Tolerant ◽  
The Right ◽  
New Cultivars

AbstractBackground and AimsBananas (Musa spp.) are a major staple food for hundreds of millions of people in developing countries. The cultivated varieties are seedless and parthenocarpic clones of which the ancestral origin remains to be clarified. The most important cultivars are triploids with an AAA, AAB, or ABB genome constitution, with A and B genomes provided by M. acuminata and M. balbisiana, respectively. Previous studies suggested that inter-genome recombinations were relatively common in banana cultivars and that triploids were more likely to have passed through an intermediate hybrid. In this study, we investigated the chromosome structure within the ABB group, composed of starchy cooking bananas that play an important role in food security.MethodsUsing SNP markers called from RAD-Seq data, we studied the chromosome structure of 36 ABB genotypes spanning defined taxonomic subgroups. To complement our understanding, we search for similar events within nine AB hybrid genotypes.Key ResultsRecurrent Homoeologous Exchanges (HEs), i.e. chromatin exchanges between A and B subgenomes were unraveled with at least 9 founding events at the origin of the ABB bananas prior to the clonal diversification. The discovery of this nine founding events allows discussing the possible routes that led to the creation of the different subgroups and formulate new hypotheses. Based on our observations, we suggest different routes that gave rise to the current diversity in the ABB cultivars. Routes involving primary AB hybrids, routes leading to shared HEs and routes leading to a B excess ratio. Genetic fluxes took place between M. acuminata and M. balbisiana, particularly in India, where these unbalanced AB hybrids and ABB allotriploid originated and where cultivated M. balbisiana are abundant.ConclusionsThe result of this study clarifies the classification of ABB cultivars and leading possibly to the revision of the classification of this subgroup. This is an important step to unravel the origin of polyploid bananas, and contributes to possible scenarios on the origin. ABB bananas are hypothesized to be more drought tolerant. Knowing the origin of our current cultivars and so their potential parents will help breeders to make the right choices for future crosses. The M. balbisiana genome is a good source to create new cultivars able to answer the numerous challenges of banana breeding.

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