Investigating the effect of different wavelengths of light on germination of Cicer arietinum
Study on the impact of light wavelengths on seed germination.
Adam Morris
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Investigating the effect of different wavelengths of light on germination of Cicer arietinum
Name
ESS
Professor
October 4, 2014
"Evaluate the impact of different light wavelengths on the germination of Cicer arietinum. In
your answer, discuss the methodology used, the results obtained, and the implications of light
quality on seed germination. Consider how the findings of this experiment contribute to the
broader understanding of plant development and seedling growth."
Word count: 800-1000 words
Investigating the effect of different wavelengths of light on germination of Cicer arietinum
Name
ESS
Professor
October 4, 2014
"Evaluate the impact of different light wavelengths on the germination of Cicer arietinum. In
your answer, discuss the methodology used, the results obtained, and the implications of light
quality on seed germination. Consider how the findings of this experiment contribute to the
broader understanding of plant development and seedling growth."
Word count: 800-1000 words
Surname 2
INTRODUCTION
Chickpea (Cicer arietinum) is a dicot and hypogeal plant. The plant propagates
through viable seeds which are considered to have germinated after emerging from the
ground and concentrates most of its energies on the cotyledons thereby making them large.
Initially, the seed absorbs water and swells at the optimal temperature of 28-33°C after which
the radicle starts emerging followed by the plumule, which moves upwards (Singh and
Diwakar 28; Brändel 12). During the germination process, the epicotyls, which is a region
above the cotyledon, elongates and causes vertical growth on the plumule. This growth
produces an upright shoot with leaves, whereas the radicle grows downwards to produce the
roots (Chory et al. 12066). The vertical growth in germination of chickpea seeds happens at a
notably first rate. When the chickpea seeds lack sufficient luminous power in the form of
light, it responds by developing a weak but long stem (Kvaalen and Maigull 437; Khan and
Ungar 279).
The effects of light in the germination of seeds and growth of seedlings have been
extensively researched (Fankhauser and Chory 203). The presence of light in the area of
germination could influence germination in some seeds whereas its presence may result in
inhibition (Batty 23; Dove 14). In 2011, Anchalee reported his findings by stating that lights
of different wavelengths could result in different effects on various germination parameters
of Nepenthes mirabilis. Various types of visible light for example green (510nm), red
(660nm), blue (475nm), yellow (570nm) and white (400-700nm) can be used to promote
seeds germination on some selected seeds (Jones and Jones 56; Khan and Salman 131).
Anchalee concluded that although the germination of seeds was influenced by red and white
lights, the effect resulting from red light could not be match with any other. Thus, the aim of
this experiment was to investigate the effects different wavelengths of visible light on the
INTRODUCTION
Chickpea (Cicer arietinum) is a dicot and hypogeal plant. The plant propagates
through viable seeds which are considered to have germinated after emerging from the
ground and concentrates most of its energies on the cotyledons thereby making them large.
Initially, the seed absorbs water and swells at the optimal temperature of 28-33°C after which
the radicle starts emerging followed by the plumule, which moves upwards (Singh and
Diwakar 28; Brändel 12). During the germination process, the epicotyls, which is a region
above the cotyledon, elongates and causes vertical growth on the plumule. This growth
produces an upright shoot with leaves, whereas the radicle grows downwards to produce the
roots (Chory et al. 12066). The vertical growth in germination of chickpea seeds happens at a
notably first rate. When the chickpea seeds lack sufficient luminous power in the form of
light, it responds by developing a weak but long stem (Kvaalen and Maigull 437; Khan and
Ungar 279).
The effects of light in the germination of seeds and growth of seedlings have been
extensively researched (Fankhauser and Chory 203). The presence of light in the area of
germination could influence germination in some seeds whereas its presence may result in
inhibition (Batty 23; Dove 14). In 2011, Anchalee reported his findings by stating that lights
of different wavelengths could result in different effects on various germination parameters
of Nepenthes mirabilis. Various types of visible light for example green (510nm), red
(660nm), blue (475nm), yellow (570nm) and white (400-700nm) can be used to promote
seeds germination on some selected seeds (Jones and Jones 56; Khan and Salman 131).
Anchalee concluded that although the germination of seeds was influenced by red and white
lights, the effect resulting from red light could not be match with any other. Thus, the aim of
this experiment was to investigate the effects different wavelengths of visible light on the
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Subject
Biology