Plant Genetic Variation
Mostrando 1-12 de 241 artigos, teses e dissertações.
-
1. Genetic variability revealed by microsatellite markers in a germplasm collection of Jatropha curcas L. in Brazil: an important plant for biofuels
Abstract We evaluated the genetic variability of a collection of Jatropha curcas germplasm, represented by 93 accessions, using microsatellite markers. Among the 60 markers tested, five of them detected polymorphisms, with a total of 11 alleles and mean of 2.2 alleles per loci. These five markers enabled the quantification of genetic variability through esti
Crop Breed. Appl. Biotechnol.. Publicado em: 31/10/2019
-
2. Phenotypic Characterization and Genetic Diversity of Sugarcane Varieties Cultivated in Northern Karnataka of India based on Principal Component and Cluster Analyses
Abstract: Sugarcane is a major commercial crop grown in India and across the world. Hence, several elite varieties have been developed now-a-days to overcome many obstacles including abiotic stresses and diseases. The present study was undertaken to screen genetic variation among twenty four sugarcane varieties that are commonly cultivated across Northern Ka
Braz. arch. biol. technol.. Publicado em: 24/10/2019
-
3. Plot size for evaluation of Arabica coffee yield
ABSTRACT. In most cases, in genetic breeding of Arabica coffee, plot size is defined in an empirical manner. It is often based only on the experience of the breeders and the availability of resources, potentially leading to a reduction in precision. Therefore, the aim of this study was to estimate the size of the experimental plot for evaluation of coffee yi
Acta Sci., Agron.. Publicado em: 23/09/2019
-
4. Tomato progenies selection in Rondônia, Brazil
RESUMO O objetivo deste trabalho foi selecionar progênies endogâmicas de tomate, a partir da cultivar Yoshimatsu e realizar teste de progênies no estado de Rondônia, seguindo o delineamento de blocos ao acaso com quatro repetições e oito plantas por parcela, num espaçamento de 1x0,5 m, conduzidas com uma haste. Mediante analise dos resultados verifico
Hortic. Bras.. Publicado em: 15/04/2019
-
5. Detection of Somaclonal Variation in Micropropagated and Acclimatized Plantlets of Oryza sativa MRQ 74 from Stem Explants
RESUMO: No sistema de cultura de tecidos de plantas, o fornecimento excessivo de hormônios de crescimento vegetal pode inibir o crescimento e desenvolvimento dos regenerantes e, às vezes, induzir a variação somaclonal. Neste estudo, a concentração ideal de hormônios de crescimento para regeneração in vitro de Oryza sativa L. cv. MRQ 74 foi identific
Planta daninha. Publicado em: 08/04/2019
-
6. Genetic parameters in agronomic characters for selection of superior lineages of Ricinus communis L
RESUMO: O conhecimento da variabilidade e herdabilidade dos caracteres agronômicos de interesse auxiliam na seleção de materiais superiores. Desta forma, objetivou-se avaliar os parâmetros genéticos de caracteres agronômicos em linhagens de mamoneira e quantificar as correlações genéticas entre eles. O trabalho foi desenvolvido na área experimental
Cienc. Rural. Publicado em: 11/02/2019
-
7. Agronomic performance and genetic divergence between genotypes of Manihot esculenta
Abstract The morphoagronomic characterization of 12 genotypes of M. esculenta was performed during the 2013/2014 and 2014/2015 crop years. The 12 genotypes were planted in a randomized block design, with four replicates per genotype. Number of tuberous roots per plant, weight of tuberous roots, root yield, total plant weight, harvest index, plant height, hei
An. Acad. Bras. Ciênc.. Publicado em: 03/09/2018
-
8. Genetic parameters and selection of macaw palm (Acrocomia aculeata) accessions: an alternative crop for biofuels
Abstract This study aimed to estimate the parameters related to the genetic control of the physical characteristics of the fruits, oil content, and oil yield, and to proceed with the selection of macaw palm accessions. Forty-four macaw palm accessions of the active germplasm collection of the Federal University of Viçosa were collected for the evaluation of
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-09
-
9. Genetic gains in agronomic and technological traits of elite cotton genotypes
ABSTRACT The objective of this work was to estimate the predicted genetic gains with the simultaneous selection of agronomic and technological traits from elite cotton lines using selection indexes. Data from the evaluation of 36 elite lines were evaluated in three trials located in Apodi-RN in 2013 and 2014 and Santa Helena, GO, Brazil in 2013, in a randomi
Bragantia. Publicado em: 14/06/2018
-
10. Physiological response and productivity of safflower lines under water deficit and rehydration
ABSTRACT Water deficit is one of the major stresses affecting plant growth and productivity worldwide. Plants induce various morphological, physiological, biochemical and molecular changes to adapt to the changing environment. Safflower (Carthamus tinctorius L.), a potential oil producer, is highly adaptable to various environmental conditions, such as lack
An. Acad. Bras. Ciênc.. Publicado em: 07/12/2017
-
11. Genetic diversity of a Paspalum notatum Flügge germplasm collection
ABSTRACT The objective of this study was to assess the genetic diversity among accessions of Paspalum notatum based on morphological marker traits and identify those morphological traits that contribute most to the variability among accessions. Fifty-three accessions were evaluated for the following traits: length, width, color, and pubescence of sheath; len
R. Bras. Zootec.. Publicado em: 2017-09
-
12. Overcoming crossing barriers between jatropha (Jatropha curcas L.) and castor bean (Ricinus communisL.)
Abstract A limitation in improvement of jatropha (Jatropha curcas) has been the low genetic variation among the available germplasm. An alternative to create genetic variability and incorporate desirable traits is through wide crossing. Due to reproductive barriers, wide crossing in jatropha has had limited success. In this experiment, intergeneric hybridiza
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-06