Plant growth and defense traits in Sorghum bicolor’s response to Chilo partellus in the tropics

2022 ◽  
Author(s):  
Adekunle W. Adesanya ◽  
Maria Isabel Gomez ◽  
Kimberly Morrell ◽  
Charles Midega ◽  
Zeyaur Khan ◽  
...  
Keyword(s):  
Plant Growth ◽  
Chilo Partellus ◽  
The Tropics

Pathogenicity and reproductive fitness of Pratylenchus brachyurus on cowpea

Nematology ◽  
2008 ◽  
Vol 10 (4) ◽  
pp. 495-500 ◽  
Author(s):  
Kércya Maria Simões de Siqueira ◽  
Mário Massayuki Inomoto
Keyword(s):  
Plant Growth ◽  
Reproductive Fitness ◽  
Initial Population ◽  
Cowpea Cultivars ◽  
The Third ◽  
Field Management ◽  
Pratylenchus Brachyurus ◽  
Lesion Nematode ◽  
The Tropics ◽  
Reproduction Factor

AbstractThe lesion nematode Pratylenchus brachyurus is widespread in cowpea plantations throughout the tropics and sub-tropics. However, the pathogenicity of P. brachyurus on cowpea has been scarcely studied. In this work, it was demonstrated in two glasshouse experiments that an isolate (Pb20) of P. brachyurus was pathogenic to cowpea cv. IPA-206, adversely affecting the plant growth and pod formation and filling. Initial population levels of 5000 and 15 000 nematodes per plant caused reduction of root growth and typical decay of root tissue. The third experiment demonstrated that all six cowpea cultivars selected for evaluation supported reproduction of three isolates of P. brachyurus (Pb20, Pb21 and Pb23) in their roots, although the reproduction factor values obtained indicated that they were dissimilar in their reproductive fitness. Low resistance to P. brachyurus was reported for at least one tested cultivar, but apparently of an insufficient degree to be effective for field management of the nematode.

scholarly journals The agricultural value of rainfall in the tropics

1928 ◽  
Vol 103 (722) ◽  
pp. 82-96
Keyword(s):  
Soil Moisture ◽  
Plant Growth ◽  
General Problem ◽  
Difficult Problem ◽  
Rainfall Data ◽  
Parent Plant ◽  
Personal Equation ◽  
Physiological Processes ◽  
The Tropics ◽  
United Provinces

The objective of the investigation which is here described was, in the first instance, economic. Having assumed responsibility for the official forecasts of the main crops of the United Provinces, India, it appeared to the writer that, in a country where rainfall so dominated tire agricultural conditions, it should be possible to evolve some system, based upon rainfall data, of forecasting both area and yield of crops whih would be free from dependence on the very doubtful personal equation involved in the methods then in force. The considerable measure of success achieved in forecasting areas led to an attempt to forecast fields—a much more difficult problem. As the work proceeded the method assumed a wider significance bearing on the general problem of the availability of soil moisture for plant growth. In a year's growth, whether this be from a seed or a freshly planted slip, the yield, in whatever form it be measured, is the summation of the various reactions of the plant to its environment at every stage of its growth; in the case of annuals it may even, as Hooker (8) has suggested, include the reaction of the parent plant. What applies to the sum must, a fortiori , apply to the component parts; and it would appear, therefore, that the method employed to evaluate rainfall should afford a means of interpreting the physiological processes of the growing plant, in so far as these are dependent on rainfall.

Influence of plant growth regulators on growth, yield, and quality of tomato grown under high temperature in the tropics in the summer

2020 ◽  
pp. 1-17
Author(s):  
Md. Razzab Ali ◽  
Md. Abdul Quddus ◽  
Tanjila Nasreen Trina ◽  
Md. Mahabubur Rahman Salim ◽  
Md. Asaduzzaman
Keyword(s):  
High Temperature ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Yield ◽  
Yield And Quality ◽  
The Tropics

The origins of closed and open ecosystems

2019 ◽  
pp. 67-81
Author(s):  
William J. Bond
Keyword(s):  
Plant Growth ◽  
Vegetation Change ◽  
Atmospheric Oxygen ◽  
Vegetation Patterns ◽  
Growth Forms ◽  
The Past ◽  
Large Fluctuations ◽  
Fire Activity ◽  
The Tropics ◽  
Small Forest

Explanations for vegetation change in the past, including the ‘deep past’ (many millions of years ago) are deeply rooted in the idea that climate determines major vegetation patterns. But other factors have also changed, including large fluctuations in atmospheric CO2, influencing plant growth, and atmospheric oxygen, altering fire activity. Vertebrate herbivores have changed from gigantic dinosaurs, to small forest mammals, to the giant beasts of the Pleistocene. Plant growth forms dominating current biomes are relatively recent; broadleaved tropical and temperate forests only became common 50 million years ago (50 Ma), and C4 savannas began to sweep over the tropics from ~7 Ma. This chapter describes the changing fortunes of uncertain ecosystems and the forces that drove those changes. Researching the deep past exposes the antiquity of fire and large vertebrate consumers as processes creating open ecosystems. The past is also a test of our understanding of uncertain ecosystems in the present.

Mechanisms of ethylene biosynthesis and response in plants

2015 ◽  
Vol 58 ◽  
pp. 61-70 ◽  
Author(s):  
Paul B. Larsen
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Ethylene Biosynthesis ◽  
Unsaturated Hydrocarbon ◽  
Flower Senescence ◽  
Detailed Knowledge ◽  
Plant Growth And Development ◽  
Step Process ◽  
Ethylene Response ◽  
Ethylene Signalling

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.

Episodic whole plant growth patterns in Ligustrum

1993 ◽  
Vol 89 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Jeff S. Kuehny ◽  
Mary C. Halbrooks
Keyword(s):  
Plant Growth ◽  
Growth Patterns ◽  
Whole Plant

Adenine salvage activity during callus induction and plant growth

1994 ◽  
Vol 90 (4) ◽  
pp. 739-747 ◽  
Author(s):  
Diana Lee ◽  
Barbara A. Moffatt
Keyword(s):  
Plant Growth ◽  
Callus Induction
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