1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mars2501 [29]
2 years ago
11

Composition on photosynthesis​

Social Studies
1 answer:
vladimir1956 [14]2 years ago
3 0

Answer:

The effects on pigment composition and photosynthesis of low temperature during growth were examined in the third leaf of three chilling-tolerant and three chilling-sensitive genotypes of Zea mays L. The plants were grown under a controlled environment at 24 or 14 °C at a photon flux density (PFD) of 200 or 600 μmol m–2 s–1. At 24 °C, the two classes of genotypes showed little differences in their photosynthetic activity and their composition of pigments. At 14 °C, photosynthetic activity was considerably reduced but the chilling-tolerant genotypes displayed higher photosynthetic rates than the chilling-sensitive ones. Plants grown at 14 °C showed a reduced chlorophyll (Chl) a + b content and a reduced Chl a/b ratio but an increased ratio of total carotenoids to Chl a + b. These changes in pigment composition in plants grown at low temperature were generally more pronounced in the chilling-sensitive genotypes than in the tolerant ones, particularly at high PFD. Furthermore, at 14 °C, all the genotypes showed increased ratios of lutein, neoxanthin and xanthophyll-cycle carotenoids to Chl a + b but a reduced ratio of β-carotene to Chl a + b, especially at high PFD. At 14 °C, the chilling-tolerant genotypes, when compared with the sensitive ones, were characterized by higher contents of β-carotene and neoxanthin, a lower content of xanthophyll-cycle carotenoids, a lower ratio of xanthophylls to β-carotene, and less of their xanthophyll-cycle carotenoid pool in the form of zeaxanthin. These differences between the two classes of genotypes were more pronounced at high PFD than at low PFD. The results are discussed in terms of the relationship that may exist in maize between pigment composition and the capacity to form an efficient photosynthetic apparatus at low growth temperature.

Explanation:

<em>Hope it help you.</em>

You might be interested in
What is the name for dumplings from nepal and tibet?
marissa [1.9K]

Answer:

momo

Explanation:

Momo is the name for dumplings from nepal and tibet

4 0
2 years ago
Which of the earth's changes can be explained by plate tectonics?
DaniilM [7]
Its earthquakes -Cgirl
6 0
3 years ago
Spanish explorers traveled to the Americas to find
taurus [48]
Gold is the correct answer.
4 0
3 years ago
Read 2 more answers
The boundary between cold and warm air masses is called a?...
morpeh [17]

Answer:

With cold fronts and warm fronts, the air mass at the leading edge of the front gives the front its name. ... When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix.

:)

8 0
2 years ago
Read 2 more answers
How did Chinese traditions change Buddhism in<br> China?
Anna35 [415]

Answer: Taoist art began to be made, and China established its architectural culture, adopting the Buddhist way of paying homage through art. Buddhism in China has changed as well. Buddhist schools have been developed and Confucianism and Taoism concepts have also been incorporated into Buddhism.

Explanation:

Hope This Helps you! : )

3 0
2 years ago
Other questions:
  • In addition to being accurate and detailed, a successful troubleshooter knows that?
    7·1 answer
  • Why can you smell a cake baking in the kitchen when you are in your bedroom?
    11·2 answers
  • What is the european union and what is its purpose? aphg?
    5·2 answers
  • It is not uncommon for politicians to blame crime on outsiders. For example, politicians from one state may blame local problems
    6·1 answer
  • Follower-centered questions involve all but which of the following:
    14·1 answer
  • Which of these is a compound? A small blue sphere. A small blue sphere connected by 1 grey stick to a large green sphere. A larg
    8·2 answers
  • What does it mean when a state adopts a textbook?
    14·1 answer
  • What two things did Mehmed II have in common with Byzantine Emperor Justinian I? Select from the choices below.
    14·1 answer
  • 1. Why are people considered a resource?
    7·1 answer
  • The concept that describes a conflict area in which a region is divided into smaller regions is called _____.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!