The inheritance of vegetative growth traits in strawberries (Fragaria x ananassa) grown at low temperatures and their relationship to field productivity

1993 ◽  
Vol 87 (1-2) ◽  
pp. 170-176 ◽  
Author(s):  
D. V. Shaw ◽  
J. J. Hansen
Keyword(s):  
Vegetative Growth ◽  
Low Temperatures ◽  
Growth Traits ◽  
Fragaria X Ananassa

scholarly journals GENETIC VARIATION FOR VEGETATIVE TRAITS IN STRAWBERRIES GROWN AT DIFFERENT TEMPERATURES

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 600f-600
Author(s):  
Douglas V. Shaw
Keyword(s):  
Vegetative Growth ◽  
Low Temperatures ◽  
Genetic Basis ◽  
Genetic Variance ◽  
Growth Traits ◽  
Broad Sense Heritability ◽  
Vegetative Traits ◽  
Different Temperatures ◽  
Variance Parameters ◽  
Temperature Interactions

The extended production season of strawberries raised in mediterranean environments depends on plant development that occurs during the winter months. Seedling genotypes from 20 bi-parental crosses and their nine parent genotypes were fully vernalized and grown at 11, 14, and 17C, to test for adaptation to growth at minimal temperatures. Genetic variance parameters were estimated and tests for genetic x temperature interactions were conducted for five vegetative growth traits. Highly significant (P < 0.01) genetic effects were detected for all traits, and broad-sense heritability estimates ranged from 0.09 to 0.41. None of the genetic x temperature interactions were significant for seedling genotypes, and interactions were significant only for leaf dry weights for parental genotypes. These results indicate a genetic basis for variable vegetative growth rates, but provide no evidence for specific adaptation to growth at low temperatures.

scholarly journals Potential of Hyperspectral and Thermal Proximal Sensing for Estimating Growth Performance and Yield of Soybean Exposed to Different Drip Irrigation Regimes Under Arid Conditions

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6569 ◽  
Author(s):  
Adel H. Elmetwalli ◽  
Salah El-Hendawy ◽  
Nasser Al-Suhaibani ◽  
Majed Alotaibi ◽  
Muhammad Usman Tahir ◽  
...  
Keyword(s):  
Vegetative Growth ◽  
Growth Stage ◽  
Plant Traits ◽  
Growth Traits ◽  
Water Status ◽  
Accurate Estimation ◽  
Growth Stages ◽  
Irrigation Level ◽  
Arid Conditions ◽  
Irrigation Regimes

Proximal hyperspectral sensing tools could complement and perhaps replace destructive traditional methods for accurate estimation and monitoring of various morpho-physiological plant indicators. In this study, we assessed the potential of thermal imaging (TI) criteria and spectral reflectance indices (SRIs) to monitor different vegetative growth traits (biomass fresh weight, biomass dry weight, and canopy water mass) and seed yield (SY) of soybean exposed to 100%, 75%, and 50% of estimated crop evapotranspiration (ETc). These different plant traits were evaluated and related to TI criteria and SRIs at the beginning bloom (R1) and full seed (R6) growth stages. Results showed that all plant traits, TI criteria, and SRIs presented significant variations (p < 0.05) among irrigation regimes at both growth stages. The performance of TI criteria and SRIs for assessment of vegetative growth traits and SY fluctuated when relationships were analyzed for each irrigation regime or growth stage separately or when the data of both conditions were combined together. TI criteria and SRIs exhibited a moderate to strong relationship with vegetative growth traits when data from different irrigation regimes were pooled together at each growth stage or vice versa. The R6 and R1 growth stages are suitable for assessing SY under full (100% ETc) and severe (50% ETc) irrigation regimes, respectively, using SRIs. The overall results indicate that the usefulness of the TI and SRIs for assessment of growth, yield, and water status of soybean under arid conditions is limited to the growth stage, the irrigation level, and the combination between them.

scholarly journals Assessment of growth and productivity of five peanut cultivars and genetic diversity using RAPD markers

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Ghada M. Samaha ◽  
M. A. Ahmed ◽  
Asmaa R. Abd El-Hameid
Keyword(s):  
Genetic Diversity ◽  
Vegetative Growth ◽  
Rapd Markers ◽  
Seed Quality ◽  
Growth Traits ◽  
Block Design ◽  
Growth Yield ◽  
Yield Component ◽  
Peanut Cultivars ◽  
Yield Component Traits

Abstract Background This study was conducted to evaluate the genetic diversity of five peanut cultivars grown under field conditions. A field experiment was conducted using five peanut cultivars (Giza-5, Giza-6, Ismailia-1, Gregory, and R92) in a randomized complete block design with five replications during two following seasons to estimate the performance of five peanut cultivars for vegetative growth, yield, and yield component traits as well as seed quality traits. Twenty RAPD primers were used to identify a unique fingerprint for each of five cultivars. Results Giza-6 cultivar surpassed all the tested peanut cultivars in the most vegetative growth traits and yield and its components traits, while the lowest values were observed in Giza-5 cultivar. The dendrogram constructed from RAPD analysis showed that Gregory and Giza-5 were the most distant among five peanut cultivars. Conclusions RAPD markers are useful in the detection of genetic diversity of peanut. The availability of genetic diversity is important for the genetic improvement of peanut.

scholarly journals Comparative analysis of seed size, germination, and vegetative allocation in annual and herbaceous perennial crops and their wild relatives in Lupinus and Phaseolus (Fabaceae)

2019 ◽  
Author(s):  
Sterling A. Herron ◽  
Matthew J. Rubin ◽  
Claudia Ciotir ◽  
Timothy E. Crews ◽  
David L. Van Tassel ◽  
...  
Keyword(s):  
Seed Size ◽  
Artificial Selection ◽  
Vegetative Growth ◽  
Growth Traits ◽  
Dry Mass ◽  
Growth Patterns ◽  
Perennial Species ◽  
Node Number ◽  
Perennial Legumes ◽  
Herbaceous Perennial

ABSTRACTHerbaceous perennial species are receiving increased attention for their potential to provide both edible products and ecosystem services in agricultural systems. Many legumes (Fabaceae Lindl.) are of special interest due to nitrogen fixation carried out by bacteria in their roots and their production of protein-rich, edible seeds. However, herbaceous perennial legumes have yet to enter widespread use as pulse crops, and the response of wild, herbaceous, perennial species to artificial selection for increased seed yield remains under investigation. Here we compare cultivated and wild accessions of congeneric annual and herbaceous perennial legume species to investigate associations of lifespan and cultivation with seed size, germination, and first year vegetative growth patterns, and to characterize covariation among traits. We use “cultivated” to describe accessions with a history of human planting and use, which encompasses a continuum of domestication. Analyses focused on three annual and eight perennial Lupinus species, and three annual and four perennial Phaseolus species. We found a significant association of both lifespan and cultivation status with seed size (weight, area, length), germination proportion, node number, stem diameter, shoot dry mass, and root dry mass. Wild seed size was greater in annuals for Lupinus and greater for perennials in Phaseolus. Germination was lower in wild perennials than wild annuals in both genera, and vegetative allocation was roughly equivalent across lifespans in wild Phaseolus. Relative to wild forms, both cultivated annual and cultivated perennial accessions exhibited greater seed size, lower germination proportion, and larger overall plant size. Seed size traits were positively correlated with vegetative growth traits, and all biomass traits examined here were positively correlated. This study highlights some basic similarities and differences between annual and herbaceous perennial legumes, and provides insights into how perennial legumes might respond to artificial selection compared to annual species.

scholarly journals Temperature and Irradiance Effects on Vegetative Growth of Two Species of Leucocoryne

2003 ◽  
Vol 128 (6) ◽  
pp. 815-820
Author(s):  
J.L. Catley
Keyword(s):  
Vegetative Growth ◽  
Low Temperatures ◽  
Controlled Environment ◽  
Plant Parts ◽  
Leaf Emergence ◽  
Mean Temperature ◽  
Made In

The influences of temperature and irradiance on vegetative growth of two species of Leucocoryne (Leucocoryne coquimbensis F. Phil and L. ixioides (Hook.) Lindl.) were examined in controlled environment growth rooms. The growing environments had day/night temperatures of 10/5, 15/10, or 20/15 °C, providing mean temperatures of 7.5, 12.5, or 17.5 °C, and photosynthetic photon fluxes (PPF) of 497 or 710 μmol·m-2·s-1. Leaf emergence data were recorded up to three times a week, and measurements of vegetative growth were made in the rooms twice weekly. Destructive harvests were carried out at intervals up to four weeks apart. Leaves of L. ixioides emerged first in all mean temperatures. As mean temperature decreased from 17.5 to 7.5 °C, the differences in first emergence dates became more apparent between species. Appearance of the second leaf of both species occurred in less than half the number of days the first leaf took to emerge. The time taken for further leaves to develop increased as temperature decreased, particularly for L. ixioides and at mean temperatures below 12.5 °C. Although leaves of L. ixioides emerged first, days to emergence of further leaves increased to lag behind production of L. coquimbensis leaves, particularly when mean temperatures dropped below 12.5 °C. Temperature also significantly affected growth of other plant parts. As mean temperature increased, maximum leaf, root and main bulb dry weights increased for both species, along with secondary bulb dry weights of L. coquimbensis. As irradiance increased, maximum leaf dry weights decreased and maximum bulb dry weights increased of both species, and maximum dropper dry weights of L. coquimbensis increased. Leucocoryne coquimbensis appears to have the greatest capacity to multiply vegetatively and this is enhanced by high mean temperatures. These results suggest that mean temperatures higher than those used in this study are required for sustained leaf emergence, particularly for L. ixioides although this species has the capacity to emerge at low temperatures. High mean temperatures are also likely to promote vegetative mass of all plant parts of both species, whereas higher irradiance levels than used in this study would enhance main bulb growth.

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