Home | | Botany | | Botany | Botanical description and Economical importance of Musa paradisiaca

Chapter: 11 th 12th std standard Bio Botany plant tree Biology Higher secondary school College Notes

| Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail |

Botanical description and Economical importance of Musa paradisiaca

Botanical description and Economical importance of Musa paradisiaca
Botanical description of Musa paradisiaca :- Habit : Gignatic monocorpic perennial herb. Root : Fibrous adventitious root system. Stem : The real stem is underground called rhizome. The apparent, unbranched, errect and areal pseudostem is formed by the long, stiff and sheathy leaf bases which are rolled around one another to form an aerial pseudostem. The central axis that is concealed at the bottom of the pseudostem is called shaft. At the time of flowering, the shaft elongates, pierces through the pseudostem and produces an inflorescence

Botanical description of Musa paradisiaca

 

Habit

 

Gignatic monocorpic perennial herb.

 

Root

 

Fibrous adventitious root system.

 

Stem

 

The real stem is underground called rhizome. The apparent, unbranched, errect and areal pseudostem is formed by the long, stiff and sheathy leaf bases which are rolled around one another to form an aerial pseudostem. The central axis that is concealed at the bottom of the pseudostem is called shaft. At the time of flowering, the shaft elongates, pierces through the pseudostem and produces an inflorescence terminally.

 

Leaf

 

Simple with a long and strong petiole. The leaf blade is large and broad with sheathy leaf base. The leaf is extipulate and obtuse.

 

The pinnately parellel venation extends upto the leaf margin. The phyllotaxy is spiral.

 

Inflorescence

 

It is branced spadix. The flowers are protected by large, brightly coloured, spirally arranged, boat shaped bracts called spathes. When the flowers open, the spathes roll back and finally fall off.

 

Flowers

 

Brateate, ebractiolate, sessile, trimerous, unisexual or bisexual, when unisexual, the flowers are monoecious. The flowers are zygomorphic and epigynous.

 

Perianth

 

Tepals 6, arranged in two whorls of 3 each. The three tepals of the outer whorl and the two lateral tepals of the inner whorl are fused by valvate aestivation to form 5 toothed tube like structure. The inner posterior tepal is alone free. It is distinctly broad and membranous.

Androecium

 

Stamens 6, in two whorls of 3 each, arranged opposite to the tepals. Only 5 stamens are fertile and the inner posterior stamen is either absent or represented by a staminode. Anthers are dithecous and they dehisce by vertical slits. The filament is filiform and rudimentary ovary or pistillode is often present in the male flower.


Gynoecium

 

Ovary inferior, tricarpellary, syncarpous, trilocular, numerous ovules on axile placentation. The style is simple and filiform. The stigma is three lobed.

 

Fruit

 

An elongated fleshy berry and the seeds are not produced in cultivated varities.

 

ECONOMIC IMPORTANCE

 

1. Food plants

 

The fruits of Musa paradisiaca (Banana) are edible. The tender green bananas, the shaft and the flowers are cooked and eaten as vegetable. The leaves are commonly used as plates on festive occassions. The sap obtained from the sheathy leaf bases is considered to be an antidote for cobra bite. The small fruits obtained from Musa chinensis (Dwarf banana) are sweet and edible.


2. Fibre plant

 

The fibres obtained from sheathy leaf bases of Musa textilis (Manila hemp) are woven into Abaca cloth and used for cordage. It is also known as Manila hemp. This plant is extensively grown in Philippines.

 

3. Ornamental plants

 

Ravenala madagascariensis (Traveller's palm), Strelitzia reginae (the bird of paradise flower) and Heliconia sp. are grown as ornamentals.

 

Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail


Copyright © 2018-2020 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.