BAJA FOLIAR TAAVEEKUNBAJA FOLIAR TAAVEEKUN

  PENGGALAK PERTUMBUHANPENGGALAK PERTUMBUHAN

• Kerap kali tanaman gagal menghasilkan buah yang optimum walaupun mendapat bekalan nutrient yang betul. Kurang keberkesanan fisiologi tumbuhan adalah punca kepada fenomena ini.

• Penggalak pertumbuhan pokok adalah bahan yang digunakan untuk mengatur pengambilan nutrient dan pertumbuhan tanaman. Penggalak pertumbuhan ini memainkan peranan penting dakam percambahan biji benih, meranumkan buah, memperkasa pengambilan nutrient, menyemarak sistesis protin, memperkuat ketahanan dan membantu keadaan runtunan, mengurangkan keguguran bunga dan buah dan membantu tumbesaran pokok.

• Biasanya pengatur pertumbuhan pokok ialah auxins, gibberellins, ethylene etc.. Permintaan kepada pilihan semulajadi sudah bertambah.

Kesan Amino Acid Terhadap PokokKesan Amino Acid Terhadap Pokok

• Keperluan Asid Amino dalam kuantiti secukupnya telah diketahui lama bagi kaedah untuk menambahkan hasil dan kualiti tanaman keseluruhannya.

• Amino Acid dibekalkan kepada pokok melalui serapan tanah. Ia membantu microflora didalam tanah, lantas menggalakan integrasi penyerapan nutrient.

• Amino Acid membantu pertambahan kepekatan klorofil yang membawa kepada kesan fotosintesis yang lebih sempurna. Ini akan menjadikan tanaman lebih hijau pekat.

Kesan Asid Amino Kepada Tanaman• Penggunaan Amino acid dalam kuantiti yang betul adalah kaedah untuk

menambah hasil tanaman dan kualiti pokok. Sugguhpun pokok mempunyai kemampuan asas melakukan biosintesis bagi menghasilkan asid amino yang diperlukan dari nitrogen, carbon, oxygen and hydrogen, proses biokimia ini sangat komplek dan memerlukan tenaga yang banyak.

• Dari itu, penggunaan amino asid seperti dari TaaVeeKun Super membolehkan tumbuhan menjimatkan tenaga untuk proses ini, dimana boleh didedikasikan untuk pertumbuhan yang lebih sempurna semasa tahap pertumbuhan kritikal.

• Amino asid adalah ramuan asas dalam proses biosintesis protin dan hampir 20 jenis asid amino terlibat dalan proses biosintesis ini. Kajian mendapati asid amino boleh secara terus atau separa terlibat dalam aktiviti fisiologi tumbuhan.

• Amino acid yang dibekalkan dalam bentuk cecair, menyerap kedalam stomata tumbuhan atau melalui kawasan akar bila bercampur dengan tanah. Ini akan turut meningkatkan micro flora, yang akan membantu penyatu serapan nutrient.

Sifat Semulajadi AuxinsSifat Semulajadi Auxins

• Auxin adalah berasal dari perkataan auxien Greek bermaksud tumbuh. Campuran kompoun akan dikelaskan sebagai auxins jika ia bersifat menyebabkan pemanjangan sel mata pucuk pokok ataupun berupa asid indoleacetic dalam aktiviti fisiologi.

• Auxins biasanya menyebabkan kesan sampingan selain dari pemanjangan sel mata pucuk tetapi karektor ini dianggap kritikal kepada semua auxins dan membantu pengistilahan hormone.

Functions of AuxinFunctions of Auxin•

The following are some of the responses that auxin is known to cause (Davies, 1995; Mauseth, 1991; Raven, 1992; Salisbury and Ross, 1992).• Stimulates cell elongation

• Stimulates cell division in the cambium and, in combination with cytokinins in tissue culture

• Stimulates differentiation of phloem and xylem

• Stimulates root initiation on stem cuttings and lateral root development in tissue culture

• Mediates the tropistic response of bending in response to gravity and light

• The auxin supply from the apical bud suppresses growth of lateral buds

• Delays leaf senescence

• Can inhibit or promote (via ethylene stimulation) leaf and fruit abscission

• Can induce fruit setting and growth in some plants

• Involved in assimilate movement toward auxin possibly by an effect on phloem transport

• Delays fruit ripening

• Promotes flowering in Bromeliads

• Stimulates growth of flower parts

• Promotes (via ethylene production) femaleness in dioecious flowers

• Stimulates the production of ethylene at high concentrations

Nature of CytokininsNature of Cytokinins

• Cytokinins are compounds with a structure resembling adenine which promote cell division and have other similar functions to kinetin. Kinetin was the first cytokinin discovered and so named because of the compounds ability to promote cytokinesis (cell division). Though it is a natural compound, It is not made in plants, and is therefore usually considered a "synthetic" cytokinin (meaning that the hormone is synthesized somewhere other than in a plant). The most common form of naturally occurring cytokinin in plants today is called zeatin which was isolated from corn (Zea mays).

Cytokinin FunctionsCytokinin Functions

A list of some of the known physiological effects caused by cytokinins are listed below. The response will vary depending on the type of cytokinin and plant species (Davies, 1995; Mauseth, 1991; Raven, 1992; Salisbury and Ross, 1992). •Stimulates cell division.

•Stimulates morphogenesis (shoot initiation/bud formation) in tissue culture.

•Stimulates the growth of lateral buds-release of apical dominance.

•Stimulates leaf expansion resulting from cell enlargement.

•May enhance stomatal opening in some species.

•Promotes the conversion of etioplasts into chloroplasts via stimulation of chlorophyll synthesis.

The Nature of GibberellinsThe Nature of Gibberellins

• Unlike the classification of auxins which are classified on the basis of function, gibberellins are classified on the basis of structure as well as function. All gibberellins are derived from the ent-gibberellane skeleton. The structure of this skeleton derivative along with the structure of a few of the active gibberellins are shown above. The gibberellins are named GA1....GAn in order of discovery. Gibberellic acid, which was the first gibberellin to be structurally characterised , is GA3. There are currently 136 GAs identified from plants, fungi and bacteria

Functions of GibberellinsFunctions of Gibberellins

• Active gibberellins show many physiological effects, each depending on the type of gibberellin present as well as the species of plant. Some of the physiological processes stimulated by gibberellins are outlined below (Davies, 1995; Mauseth, 1991; Raven, 1992; Salisbury and Ross, 1992).

• Stimulate stem elongation by stimulating cell division and elongation.

• Stimulates bolting/flowering in response to long days.

• Breaks seed dormancy in some plants which require stratification or light to induce germination.

• Stimulates enzyme production (a-amylase) in germinating cereal grains for mobilization of seed reserves.

• Induces maleness in dioecious flowers (sex expression).

• Can cause parthenocarpic (seedless) fruit development.

• Can delay senescence in leaves and citrus fruits.