ARTIFICIAL HYBRIDIZATION WITHOUT EMASCULATION IN LIMA BEAN (Phaseolus lunatus L.)

Sousa, Antônia M. de C. Batista de; Silva, Verônica Brito da; Silvestre, Ellida de Aguiar; Silva, Raimundo Nonato Oliveira; Lopes, Ângela Celis de Almeida; Gomes, Regina Lúcia Ferreira

doi:10.1590/1983-21252022v35n123rc

Cited by 2 publications

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References 13 publications

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“…Additionally, Sousa et al (2022Sousa et al ( , 2015 related that the temperature and relative humidity were the factors that most affected the pod formation rate during the crop development. The average temperatures observed were 29.8 (morning) and 33.2ºC (afternoon) and an average relative air humidity of 64%, which described the ideal temperature and humidity for Lima bean to avoid the heat stress and facilitate the pod formation.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Lima Bean Accessions at High Temperatures

et al. 2022

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- Lima bean (Phaseolus lunatus L.) develops at an optimal temperature in the range of 20-30°C, temperatures above 30-35°C compromise the photosynthetic efficiency of the crop. Considering the importance of lima bean cultivation, the objective of this study was to carry out a morphoagronomic and phenological characterization of 46 lima bean accessions tolerant to high temperatures from the core collection of lima bean at the Universidade Federal do Piauí. The experiment was conducted from February to July 2021 in a completely randomized block design with four replications, where the plot consisted of a pot with two plants. Genotype characterization was performed based on 20 morphoagronomic and phenological descriptors of lima bean. Based on Pearson's correlation, the number of emitted and aborted flowers had a greater genetic correlation with the total number of seeds and pods produced. Pod length and width were positively correlated with seed thickness, length, and width. Five groups were formed based on UPGMA grouping. It was observed that the UFPI-922 and UFPI-945 accessions had a higher performance under high-temperature conditions in relation to the number of flowers and pods emitted, as well as lower values for the number of aborted pods. The accessions UFPI-1037, UFPI-876, UFPI-1036, UFPI-1028, UFPI-1052, UFPI-1064, UFPI-1038, and UFPI-1062 are promising for precocity, productivity, emission of flowers and pods formed, and can be used in breeding programs.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Lima Bean Accessions at High Temperatures

et al. 2022

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Selection of lima bean accessions for fresh and dry production

Damas,

Barroso,

Assunção Neto

et al. 2023

Rev. bras. eng. agríc. ambient.

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The selection of lima bean accessions in the fresh and dry stages is an excellent tool to increase crop yield in Brazil and ensure a source of vegetable protein for the population. Principal component analysis and nonparametric indices can be used to identify promising accessions based on the desired agronomic variables. The aim of the present study was to select accessions from traditional lima bean varieties in the fresh and dry stages using principal component analysis and nonparametric selection indices. The experiment consisted of a randomized block design, evaluating 13 treatments in four replicates. The experimental plot contained 20 plants in its study area. The first two principal components for the two stages explained more than 80% of the variation found among the accessions. The Mulamba & Mock and Genotype-Ideotype selection indices were efficient in classifying promising varieties for breeding programs. The UFPI 1111 accession can be used in fresh lima bean production, and its UFPI 1248 and 1294 counterparts in lima bean breeding programs.

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ARTIFICIAL HYBRIDIZATION WITHOUT EMASCULATION IN LIMA BEAN (Phaseolus lunatus L.)

Cited by 2 publications

References 13 publications

Evaluation of Lima Bean Accessions at High Temperatures

Evaluation of Lima Bean Accessions at High Temperatures

Selection of lima bean accessions for fresh and dry production

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