Seed Reserve Mobilization Evaluation for Selection of High-Vigor Common Bean Cultivars

Padilha, Matheus Santin; Coelho, Cileide Maria Medeiros; Andrade, Gisiane Camargo de

doi:10.1590/1983-21252020v33n407rc

Cited by 5 publications

(6 citation statements)

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“…This test could also be considered an indicator of seed vigor. This is because the seeds with greater physiological quality exhibit rapid and further uniform germination (Munizzi et al, 2010) as these seeds are better efficient in using their reserves (Padilha;Andrade, 2020), which reflects in the superior performance of the seedling.…”

Section: Resultsmentioning

confidence: 99%

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Sowing density adjustment by rice seed vigor

et al. 2022

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The use of high-vigor seeds combined with seeding density adjustment at sowing is speculated to ensure high yields. However, certain doubts regarding the effect of this combined approach on rice cultivation remain owing to the tillering capacity. In this context, the present study aimed to determine the effects of seeding density adjustment according to vigor on the initial establishment of seedlings in the field. A physiological characterization was conducted using the germination test, vigor by accelerated aging, electrical conductivity, first count, shoot length, root length, total seedling length, and dry mass in the 2019/2020 and 2020/2021 growing seasons. The evaluations were conducted using a completely randomized design with four replications. Subsequently, the seed lots were selected, from which a fraction of seeds were submitted to artificial vigor reduction. Afterward, these seeds were sown in the main producing regions of the state of Santa Catarina, under a randomized block design with four replications. Three treatment groups were formed: one without density adjustment, one with adjustment by germination, and one with adjustment by vigor in accelerated aging. Twenty-one days after sowing, the number of emerged seedlings per unit area was determined. An interaction between the factors of adjustment for density and seed quality was observed. This was evidenced in the fact that even with the adjustment of density by vigor, the seed lot with lower quality presented the emergence of a lower number of seedlings, and the performance of these seeds was not equivalent to that observed in the lot with superior quality. Accordingly, it was concluded that the seeding density adjustment by vigor combined with the use of seeds with high-vigor is a suitable strategy for achieving a significant increase in plant emergence during the initial establishment in the field.

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Section: Resultsmentioning

confidence: 99%

“…In the seedling formation process, the dry matter is transported from the endosperm, hydrolyzed, and directed to the embryonic axis. Therefore, the seeds with high-vigor, which exhibit greater efficiency in these processes, result in vigorous seedlings (Padilha, Coelho;Andrade, 2020).…”

Section: Resultsmentioning

confidence: 99%

Sowing density adjustment by rice seed vigor

et al. 2022

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“…Nevertheless, each seed germinates at a different time along many days. Many factors are known to influence the rate and time for germination, 20,22,23,[26][27][28][29][30] but most studies address this effect from the perspective of a seed population. An alternative approach is that each seed decides by itself when to germinate.…”

Section: Seeds Make Individual Decisionsmentioning

confidence: 99%

“…Variability in the rate of reserves mobilization and in the fraction of total reserves that is allocated to the seedling biomass was observed among genotypes of common bean (Phaseolus vulgaris). 30 The reserves mobilization is usually slower in seeds germinating under stressful conditions, as observed in wheat (Triticum aestivum) under drought or salinity stress, 36 on common bean exposed to Cadmium toxic level, 26 on cashew (Anacardium occidentale) under NaCl stress, 35 and on wild poinsettia (Euphorbia heterophylla) in the dark. 34 Different classes of proteins (e.g., globulins, albumins, and prolamins) can also be mobilized at different times.…”

Section: The Speed and Amount Of Reserves Mobilizationmentioning

confidence: 99%

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Plants make smart decisions in complex environments

Severino

2021

Plant Signaling & Behavior

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This review proposes that plants make smart decision and encourages scientists to formulate and test hypotheses about plant's decisions as an option to investigate complex phenomena that are hardly explained through the predominant mechanistic approach. Three physiological processes (seed germination and seedling emergence, abortion of reproductive structures, and regulation of photosynthesis) are discussed to illustrate the plant's ability to make decisions from three different perspectives. It is proposed that plant scientists could access a rich pool of information by formulating and testing hypothesis on plant's decisions, even when it is not possible elucidating the full mechanism underpinning the decision. Decisions with a strategic component are discussed for seed germination and seedling emergence, in which the plant depends on limited information for making early decisions that will influence its survival and potential growth. Decisions consistent with an analysis of benefit/cost are illustrated with observations from abortion of reproductive structures. Decisions that search the optimization of complex processes are exemplified with the regulation of photosynthesis. For each type of decision, some draft experiments are suggested as exercise on how this framework could be applied. It is proposed that scientists could make experiments with plant's decisions adapting methods that were developed for other disciplines.

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