Plant Growth
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2022 ◽  
Vol 244 ◽  
pp. 118724
Author(s):  
Xiangyan Yun ◽  
Jun Zhou ◽  
Yaohui Zhu ◽  
Xiong Li ◽  
Shan Liu ◽  
...  

2022 ◽  
Vol 23 ◽  
pp. 100737
Author(s):  
B. Han ◽  
X. Yang ◽  
J. Ren ◽  
L. Liu ◽  
E. Zhao ◽  
...  

HortScience ◽  
2022 ◽  
Vol 57 (2) ◽  
pp. 247-256
Author(s):  
Cary A. Mitchell

The most recent platform for protected horticultural crop production, with the shortest history to date, is located entirely indoors, lacking even the benefit of free, natural sunlight. Although this may not sound offhand like a good idea for commercial specialty-crop production, the concept of indoor controlled-environment plant growth started originally for the benefit of researchers—to systematically investigate effects of specific environmental factors on plant growth and development in isolation from environmental factors varying in uncontrolled ways that would confound or change experimental findings. In addition to its value for basic and applied research, it soon was discovered that providing nonlimiting plant-growth environments greatly enhanced crop yield and enabled manipulation of plant development in ways that were never previously possible. As supporting technology for indoor crop production has improved in capability and efficiency, energy requirements have declined substantially for growing crops through entire production cycles in completely controlled environments, and this combination has spawned a new sector of the controlled-environment crop-production industry. This article chronicles the evolution of events, enabling technologies, and entrepreneurial efforts that have brought local, year-round indoor crop production to the forefront of public visibility and the threshold of profitability for a growing number of specialty crops in locations with seasonal climates.


Author(s):  
Parvathy S. Nair ◽  
K.G. Ajith Kumar ◽  
G.P. Gayatri ◽  
Ajayakumar .

Background: The hormonal up-regulation and down-regulation in recalcitrant seeds, on the other hand, has received little research. We tested fou plant growth regulators from distinct families of phytohormones at the same time to better understand their differential input from maternal tissues to growing Syzygium cumini seeds. Methods: During April-June 2020, seeds were collected in their native habitats in the Western Ghats. Seeds were chosen at random from each treatment. The embryonic tissues of seeds were chopped up and frozen for LC-MS/MS hormonal profiling. Result: Except for ABA, the dynamics of key plant hormones in this recalcitrant seed were identical to that of desiccation-tolerant orthodox seeds. When compared to other conventional seeds, SA was shown to accumulate at an unusually high level in mature embryonic tissues, demonstrating the highly hydrated seed’s defense mechanism against fungal attack following seed shedding.


2022 ◽  
Vol 17 (1) ◽  
Author(s):  
Rupali Gupta ◽  
Dorin Elkabetz ◽  
Meirav Leibman-Markus ◽  
Elie Jami ◽  
Maya Bar

Abstract Background The interaction of plants with the complex microbial networks that inhabit them is important for plant health. While the reliance of plants on their microbial inhabitants for defense against invading pathogens is well documented, the acquisition of data concerning the relationships between plant developmental stage or aging, and microbiome assembly, is still underway. The plant hormone cytokinin (CK) regulates various plant growth and developmental processes. Here, examining the relationships between plant development and microbiome assembly, we observed developmental-age dependent changes in the phyllopshere microbiome. We show that age-related shifts in microbiome content vary based on content of, or sensitivity to, CK. Results We found a developmental age associated decline in microbial richness and diversity, accompanied by a decline in the presence of growth promoting and resistance inducing Bacilli in the phyllosphere. This decline was absent from CK-rich or CK-hypersensitive genotypes. Bacillus isolates we obtained from CK rich genotypes were found to alter the expression of developmental genes to support morphogenesis and alter the leaf developmental program when applied to seedlings, and enhance yield and agricultural productivity when applied to mature plants. Conclusions Our results support the notion that CK supports developmental functions in part via the bacterial community.


2022 ◽  
Vol 3 (2) ◽  
pp. 295-302
Author(s):  
Ni Wayan Suardiati Putri ◽  
Kadek Suryati ◽  
Ketut Sepdyana Kartini ◽  
Ni Wayan Eka Wijayanti ◽  
I Wayan Gede Wardika ◽  
...  

From the results of discussions conducted with the Principal of the Kindergarten School. Kartika, it was agreed that the problems that were resolved in this activity were: 1) So that Partners had fun gardening media; 2) So that Partners have knowledge and skills in managing hydroponic gardens. The agreed solutions to solve the problems faced by Partners are as follows: 1) Procurement of hydroponic gardening equipment, so that gardening becomes cleaner and more attractive; 2) Training on hydroponic gardening procedures for teachers. The results of the activity showed that there was an increase in teachers' understanding of hydroponic farming by 90%. Besides that, there is also an increase in teacher skills in hydroponic farming as shown by good plant growth during the harvest period.


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