Investigating the effect of different wavelengths of light on germination of Cicer arietinum

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Surname1Investigating the effect of different wavelengths of light on germination ofCicer arietinumNameESSProfessorOctober 4, 2014"Evaluate the impact of different light wavelengths on the germination ofCicer arietinum. Inyour answer, discuss the methodology used, the results obtained, and the implications of lightquality on seed germination. Consider how the findings of this experiment contribute to thebroader understanding of plant development and seedling growth."Word count: 800-1000 words

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Surname2INTRODUCTIONChickpea(Cicer arietinum)is a dicot and hypogeal plant. The plant propagatesthrough viable seeds which areconsidered to have germinated after emerging from theground and concentrates most of its energies on the cotyledons thereby making them large.Initially, theseed absorbs water and swells at the optimal temperature of 28-33°C after whichthe radiclestarts emerging followed by the plumule, which moves upwards(Singh andDiwakar 28;Brändel 12). During the germination process, the epicotyls, which is a regionabove the cotyledon, elongates and causes vertical growth on the plumule. This growthproduces an upright shoot with leaves, whereas theradiclegrows downwards to produce theroots(Chory et al.12066).The vertical growth in germination of chickpea seeds happens at anotably first rate. When the chickpea seeds lack sufficient luminous power intheform oflight, it responds by developing a weak but long stem(Kvaalen and Maigull 437;Khan andUngar 279).The effects of light in the germination of seeds and growth of seedlings have beenextensively researched(Fankhauser and Chory 203). Thepresence of light in the area ofgermination could influence germination in some seeds whereas its presence may result ininhibition(Batty 23; Dove 14). In 2011, Anchalee reported his findings by stating that lightsof different wavelengthscould result in different effects on various germination parametersofNepenthes mirabilis. Various types of visible light for example green (510nm), red(660nm), blue (475nm), yellow (570nm) and white (400-700nm) can be used to promoteseeds germination on some selected seeds(Jones and Jones 56;Khan and Salman 131).Anchaleeconcluded that although the germination of seeds was influenced by red and whitelights, the effect resulting from red light could not be match with any other. Thus, the aim ofthis experiment was to investigate the effects different wavelengths of visible light on the

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Surname3germinability ofCicer arietinum.Out of this experiment, a light that promotes germinationwill be identified.

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