Relationship Between Seed Mass and Young-Seedling Growth and Morphology Among Nine Bluebunch Wheatgrass Populations

Mukherjee, Jayanti Ray; Jones, Thomas A.; Monaco, Thomas A.; Adler, Peter B.

doi:10.1016/j.rama.2018.11.006

Cited by 12 publications

(9 citation statements)

References 63 publications

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“…Plant height was found to be positively related to seed weight, consistent with our hypothesis. This result is in line with previous studies that have found a positive correlation between seed weight and plant size (Hendrix 1984) and a positive correlation between seed mass and shoot length (Mukherjee et al 2019). Heavy seeds having big embryos and endosperms can produce higher plants.…”

Section: Discussionsupporting

confidence: 93%

“…Seeds are an important source for plant propagation. Seed weight was found to be positively correlated with plant size (Hendrix 1984), and similarly, seed mass was positively correlated with shoot mass, root mass, and shoot length (Mukherjee et al 2019). Large seed weight showed higher germination percentage (Anjusha et al 2015), and high seed weight and width resulted in faster germination (Xu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Seed Germination, Post-fire Plant Growth and Conservation of the Rare Endemic and Endangered Chamaecrista glandulosa var. mirabilis (Fabaceae)

Colon

Terrada

2022

Preprint

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Conservation has been challenged by biodiversity loss drivers. Also, fire disturbance can temporarily change ecosystems. Fire effects in soil nutrients and pH, plant abundance, reproduction, seed weight, seed germination, and plant growth were assessed. Four seed starting systems were used for germination and growth under laboratory conditions. We found significant differences in the means of iron, manganese, nickel, soil pH, and plant height, and a significant positive linear relationship between seed weight and plant height. Results indicate that fires increase soil pH and cause changes in micronutrients that can increase plant growth. Large size plants are produced from high weight seeds. Finally, ex situ conservation and species reintroduction were feasible conservation strategies that should be integrated with in situ conservation.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Seed Germination, Post-fire Plant Growth and Conservation of the Rare Endemic and Endangered Chamaecrista glandulosa var. mirabilis (Fabaceae)

Colon

Terrada

2022

Preprint

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“…Seed mass was also positively related to seedling recruitment across taxa, a result that has been found for other species across the globe (Shackelford et al, 2021 ). Seed mass is a complex trait, however, as it may be a proxy for other seed traits like embryo size or seed shape (Barak et al, 2018 ; Mukherjee et al, 2019 ). In addition, while seed size is generally known to have moderate heritability, it is also known to be strongly affected by the maternal environment (Baskin & Baskin, 2014 ).…”

Section: Discussionmentioning

confidence: 99%

Phenotypes and environment predict seedling survival for seven co‐occurring Great Basin plant taxa growing with invasive grass

Agneray

Leger

2022

Ecology and Evolution

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Trait–environment correlations can arise from local adaptation and can identify genetically and environmentally appropriate seeds for restoration projects. However, anthropogenic changes can disrupt the relationships between traits and fitness. Finding the best seed sources for restoration may rely on describing plant traits adaptive in disturbed and invaded environments, recognizing that while traits may differ among species and functional groups, there may be similarities in the strategies that increase seedling establishment. Focusing on three grass genera, two shrub species, and two forb genera, we collected seeds of all taxa from 16 common sites in the sagebrush steppe of the western United States. We measured seed and seedling characteristics, including seed size, emergence timing, and root and shoot traits, and compiled a suite of environmental variables for each collection site. We described trait–environment associations and asked how traits or environment of origin were associated with seedling survival in invaded gardens. Sampling seven taxa from the same sites allowed us to ask how trait–environment–performance associations differ among taxa and whether natural selection favors similar traits across multiple taxa and functional groups. All taxa showed trait–environment associations consistent with local adaptation, and both environment of origin and phenotypes predicted survival in competitive restoration settings, with some commonalities among taxa. Notably, rapid emergence and larger seeds increased survival for multiple taxa. Environmental factors at collection sites, including lower slopes (especially for grasses), greater mean annual temperatures (especially for shrubs and forbs), and greater precipitation seasonality were frequently associated with increased survival. We noted one collection site with high seedling survival across all seven taxa, suggesting that conditions within some sites may result in selection for traits that increase establishment for multiple species. Thus, choosing native plant sources with the most adaptive traits, along with matching climates, will likely improve the restoration of invaded communities.

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“…Across naturally occurring BBWG populations, seed mass has been positively correlated with both seedling emergence from a 4-cm seeding depth and seedling shoot dry-matter [ 88 ]. Populations with low seed mass germinated earlier and produced seedlings with greater specific root length and specific leaf area, while populations with high seed mass produced seedlings with higher initial biomass [ 60 ]. Hamerlynck et al [ 61 ] investigated how the highly successful introduced bunchgrass, crested wheatgrass ( Agropyron desertorum [Fisch.…”

Section: Bluebunch Wheatgrass: Plant Traitsmentioning

confidence: 99%

Using Genomic Selection to Develop Performance-Based Restoration Plant Materials

Jones

Monaco

Larson

et al. 2022

IJMS

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Effective native plant materials are critical to restoring the structure and function of extensively modified ecosystems, such as the sagebrush steppe of North America’s Intermountain West. The reestablishment of native bunchgrasses, e.g., bluebunch wheatgrass (Pseudoroegneria spicata [Pursh] À. Löve), is the first step for recovery from invasive species and frequent wildfire and towards greater ecosystem resiliency. Effective native plant material exhibits functional traits that confer ecological fitness, phenotypic plasticity that enables adaptation to the local environment, and genetic variation that facilitates rapid evolution to local conditions, i.e., local adaptation. Here we illustrate a multi-disciplinary approach based on genomic selection to develop plant materials that address environmental issues that constrain local populations in altered ecosystems. Based on DNA sequence, genomic selection allows rapid screening of large numbers of seedlings, even for traits expressed only in more mature plants. Plants are genotyped and phenotyped in a training population to develop a genome model for the desired phenotype. Populations with modified phenotypes can be used to identify plant syndromes and test basic hypotheses regarding relationships of traits to adaptation and to one another. The effectiveness of genomic selection in crop and livestock breeding suggests this approach has tremendous potential for improving restoration outcomes for species such as bluebunch wheatgrass.

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Relationship Between Seed Mass and Young-Seedling Growth and Morphology Among Nine Bluebunch Wheatgrass Populations

Cited by 12 publications

References 63 publications

Seed Germination, Post-fire Plant Growth and Conservation of the Rare Endemic and Endangered Chamaecrista glandulosa var. mirabilis (Fabaceae)

Seed Germination, Post-fire Plant Growth and Conservation of the Rare Endemic and Endangered Chamaecrista glandulosa var. mirabilis (Fabaceae)

Phenotypes and environment predict seedling survival for seven co‐occurring Great Basin plant taxa growing with invasive grass

Using Genomic Selection to Develop Performance-Based Restoration Plant Materials

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