Acceleration in Germination Sensu stricto Plays a Central Role on Seedling Vigor in Post-Germination.

João Paulo Ribeiro-Oliveira,Edvaldo Aparecido Amaral Da Silva,Marco Aurélio Bosseli

doi:10.3390/plants10102151

João Paulo Ribeiro-Oliveira, Edvaldo Aparecido Amaral Da Silva + Show 1 more

Open Access

https://doi.org/10.3390/plants10102151

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Abstract

An obvious relationship between germination sensu stricto and seedling development during post-germination has been considered, but not explained concerning vigor. Taking this into account, we used measurements of water dynamics in germinating seeds and seedling development to clarify that relationship. The biological model was soybean seeds, since it is the most relevant ‘true seed’ produced around world. Our findings suggest that the way energy is used (acceleration) and not its input (velocity) is the main aspect relating seed germination and seedling development, especially when considering vigor. However, velocity and acceleration can be complementary in analyses of seed physiology. Other measurements proposed here also have potential uses for testing vigor in seed lots, such as seedling vigor index and biological activity in the lot. Therefore, water dynamics in germinating seeds can be an interesting way for testing seed lots, because it is an easier, faster and cheaper method in relation to other non-destructive procedures.

Highlights

Introduction and Galina SmolikovaVigor is a functional trait acquired in the last stages of seed maturation and is responsible for seed resilience
Our findings demonstrate that germination sensu stricto and seedling vigor related to post-germination do not always have the same contribution to seedling development, there are traits of water dynamics in germinating seeds capable of building a bridge between them
The mean acceleration of water dynamics in germinating seeds is a measurement related to both germination sensu stricto and post-germination, including the development of vigorous normal seedlings

Summary

Introduction

Vigor is a functional trait acquired in the last stages of seed maturation and is responsible for seed resilience In this sense, it is expected that vigorous seeds should possess more capacity to produce early seedlings [1]. It is expected that vigorous seeds should possess more capacity to produce early seedlings [1] This in turn reduces the possibility of their suffering with inter- and intra-specific competition during early plant development. Over the past few decades, there have been reports indicating reductions of up to 50% in yield components of soybean due to the use of non-vigorous seeds [4,5] This justifies continuous research to provide practical, rapid and simple ways of predicting seed-lot vigor. Details about interactions between germination sensu stricto [1 sense]

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