The effects of CO2 on growth and transpiration of radish (Raphanus sativus) in hypobaria

Gohil, Hemant; Bucklin, R. A.; Correll, Melanie J.

doi:10.1016/j.asr.2009.11.015

Cited by 10 publications

(2 citation statements)

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“…A roadmap for genetic targets to improve soybean productivity has been presented (Ainsworth et al , 2012 ), many of which could result in lessening the impact of elevated CO 2 on plant germination and growth. In the radish, the effects of CO 2 are worse when combined with hypobaria (Gohil et al , 2010 ). The effect of elevated CO 2 varies between C 3 and C 4 plants, although there are some exceptions such as the C 4 plant millet (Li et al , 2019 ), which behaves more like a C 3 plant.…”

Section: Discussionmentioning

confidence: 99%

An Oxygen Delivery Polymer Enhances Seed Germination in a Martian-like Environment

2020

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Critical to the success of establishing a sustainable human presence on Mars is the ability to economically grow crop plants. Several environmental factors make it difficult to fully rely on local resources for agriculture. These include nutrient sparse regolith, low and fluctuating temperatures, a high amount of ultraviolet radiation, and water trapped locally in the form of ice or metal oxides. While the 96% CO 2 martian atmosphere is ideal to support photosynthesis, high CO 2 concentrations inhibit germination. An added difficulty is the fact that a vast majority of crop plants require oxygen for germination. Here, we report the production of a polymer-based oxygen delivery system that supports the germination and growth of cress seeds (Lepidium sativum) in a martian regolith simulant under a martian atmosphere at 101 kPa. The oxygen-donating system is based on a low-density lightly cross-linked polyacrylate that is foamed and converted into a dry powder. It is lightweight, added in low amounts to regolith simulant, and efficiently donates enough oxygen throughout the volume of hydrated regolith simulant to fully support seed germination and plant growth. Germination rates, plant development, and plant mass are nearly identical for L. sativum grown in 100% CO 2 in the presence of the oxygen-donating lightly cross-linked polyacrylate compared with plants grown in air. The polymer system also serves to protect root structures and better anchors plants in the regolith simulant.

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Section: Discussionmentioning

confidence: 99%

An Oxygen Delivery Polymer Enhances Seed Germination in a Martian-like Environment

2020

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“…Radish leaves and roots have been used in various parts of the world to treat cancer and it simultaneously act as antiviral and antimicrobial agents [1]. Radish leaves are rich source of glucosinolates (GSLs) [4,5]. Myrosinase is the name of the enzyme which has the function to produce isothiocyanates from glucosinolates in the presence of moisture (hydrolysis process) which is responsible for the pungency, odor and hot biting flavor in radish leaves.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Studies of Radish Leaf Powder

Prasad

2016

MATEC Web of Conferences

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Abstract-Radish leaves (Raphanus sativus) powder fractions was subjected to moisture adsorption isotherms at different isothermal temperature conditions from 15-45 o C with an equal interval of 10 o C. The sorption data obtained in gravimetric static method under 0.11-0.90 water activity conditions were subjected for sorption isotherms and found to be typical sigmoid trend. Experimental data were assessed for the applicability in the prediction through sorption models fitting and found that Polynomial and GAB equations performed well over all fitted models in describing equilibrium moisture content -equilibrium relative humidity (EMC-ERH) relationships for shelf stable dehydrated radish leaf powder, over the entire range of temperatures condition under study. The net isosteric heat of sorption, differential entropy and free energy were determined at different temperatures and their dependence was seen with respect to equilibrium moisture content.

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Physiological, elemental, and stable isotope responses of the organs of mungbean to reduced atmospheric pressure

Zhao

Guo²,

Liu

et al. 2017

In Vitro Cell.Dev.Biol.-Plant

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The effects of CO2 on growth and transpiration of radish (Raphanus sativus) in hypobaria

Cited by 10 publications

References 30 publications

An Oxygen Delivery Polymer Enhances Seed Germination in a Martian-like Environment

An Oxygen Delivery Polymer Enhances Seed Germination in a Martian-like Environment

Adsorption Studies of Radish Leaf Powder

Physiological, elemental, and stable isotope responses of the organs of mungbean to reduced atmospheric pressure

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