What is dry matter partitioning in plants?

Abstract. Dry matter partitioning is the end result of the flow of assimilates from source organs via a transport path to the sink organs. The dry matter partitioning among the sinks of a plant is primarily regulated by the sinks themselves.

What is dry matter accumulation?

Dry matter accumulation takes place when photosynthesis is greater than respiration which sustains the plant’s growth and development vice versa retards the development process. From: Effect of High Temperature on Crop Productivity and Metabolism of Macro Molecules, 2019.

How will sink strength affect dry matter partitioning?

Hence, dry matter partitioning depends on the sink strengths. Using potential growth rate as a measure of sink strength, the fraction of dry matter partitioned into each sink is proportional to its potential growth rate relative to the total potential growth rate of all sinks together.

What is energy partitioning in plants?

Biomass partitioning is the process by which plants divide their energy among their leaves, stems, roots, and reproductive parts.

How do you calculate dry matter of a plant?

Calculating Dry Matter

  1. Weigh the empty container selected to hold the feed and record the weight.
  2. Place the feed in the container.
  3. Weigh and record the container and feed weight.
  4. Subtract the weight of the container from the total weight (Step 3) to determine the weight of the feed before drying.

How do you calculate dry matter?

Subtract the moisture content from 100%. In this example 100% – 13.2% = 86.8% dry matter.

What determines sink strength in plants?

While source strength depends on the amount of assimilates a plant can produce, sink strength depends on the ability of plant organs to attract assimilates (Marcelis, 1996) . In a sink-limited situation, plants accumulate assimilates (sugar and starch) because growth rates are lower than assimilate production. …

What is sink strength for a plant?

‘Sink strength’ may be defined as the capacity of phloem in the sink region to import assimilates from other parts of the plants and to release the imported substances into the sink apoplast. A stem parasitized by Cuscuta represents a very strong sink.

What is the waste product of photosynthesis?

oxygen
Plants. Plants need to excrete excess carbon dioxide and oxygen. Carbon dioxide is a waste product of aerobic respiration in plant cells. Oxygen is a waste product of photosynthesis .

Why dry matter is important?

Dry matter is also important because rations are formulated on a dry matter basis. This allows us to compare the nutrient content of different feeds on a level playing field. Changes in dry matter can greatly influence the amount of forage needed to provide specific nutrients in the diet.