8
J. Chen et al.
1.1.2.2 Evaluation of Basic Characters of Industrial Oil Plant Germ
Resources
It mainly includes the description and development of the botanical characters such
as the root, the stem, the leaf, the flower, the fruit, the seed and the like, the yield
character (fruit or seed, grease, etc.), the quality character and the like.
The composition of the root system: taproot and lateral root. Types of roots: fixed
roots and adventitious roots. Type of root system: straight root system and fibrous
root system. Root metamorphosis: storage root, supporting root, air root, climbing
root, water root and parasitic root. The storage root is divided into fleshy root and
tuber root.
Section shape of stem: cylindrical, square, triangular and flat. According to texture,
stems can be divided into wooden stems, herbaceous stems and fleshy stems. Wooden
stems are divided into trees, shrubs and subshrubs. Herbaceous stems are divided
into annual herbs, biennial herbs, perennial herbs and evergreen herbs. According
to the growth habit, the stem can be divided into vertical stem and rattan stem. The
latter can be divided into twining stems, climbing stems and stolons. The perversion
of the stem: there are two types of stem metamorphosis, aerial stem and underground
stem metamorphosis. Among them, the metamorphosis of aerial stem can be divided
into leafy stem, spiny stem, hook stem, stem tendrils, small tuber and small bulb. The
metamorphosis of underground stem can be divided into root stem, tuber, bulb and
bulb. Branch pattern of stem are divided into uniaxial branch, combined axis branch,
binary branch and pseudo-binary branch.
The morphology and size of the leaves are very different, but their components
are basically the same and can be divided into three parts: leaf, petiole and bracket.
Leaves with all three parts, called complete leaves, lacking petioles or stipules are
called incomplete leaves. The morphology of leaves is manifested in the whole
shape of leaves, leaf apex, phyllopodium, leaf margin, leaf vein, texture and surface
appendages. Leaf morphology: aciculiform, strip-shaped, lanceolate, oblanceolate,
rectangular circle, ellipse, oval, obovate, circular, cordate, obcordate, cochlear, fanshaped, reniform, panduriform, rhomboid, cuneate, triangular, scaly, shield-shaped,
arrow shape, Euphorbia pulcherrima, tubular, etc.
The composition of flowers consists of pedicels, receptacles, calyx, corolla, stamens and pistil groups. Flowers with calyx, corolla, stamens and pistil, called complete flowers, lack part or parts of flowers called incomplete flowers. According to
the presence or absence of calyx and corolla, flowers can be divided into Multiple
perianth, Single perianth, no perianth and multiplicate flower. According to the presence and distribution of stamens and pistil, flowers are divided into bisexual flowers,
unisexual flowers and asexual flowers. Corolla also has a variety of colors, including
white, red, purple, yellow and so on. Inflorescence is divided into infinite inflorescence and limited inflorescence. Infinite inflorescences are divided into racemes,
spikes, catkin, spadix, corymb, capitulum and hypanthium. Limited inflorescences
can be divided into single inflorescences, dichotomous cymes, polydichotomous
cymes and cymes.
J. Chen et al.
1.1.2.2 Evaluation of Basic Characters of Industrial Oil Plant Germ
Resources
It mainly includes the description and development of the botanical characters such
as the root, the stem, the leaf, the flower, the fruit, the seed and the like, the yield
character (fruit or seed, grease, etc.), the quality character and the like.
The composition of the root system: taproot and lateral root. Types of roots: fixed
roots and adventitious roots. Type of root system: straight root system and fibrous
root system. Root metamorphosis: storage root, supporting root, air root, climbing
root, water root and parasitic root. The storage root is divided into fleshy root and
tuber root.
Section shape of stem: cylindrical, square, triangular and flat. According to texture,
stems can be divided into wooden stems, herbaceous stems and fleshy stems. Wooden
stems are divided into trees, shrubs and subshrubs. Herbaceous stems are divided
into annual herbs, biennial herbs, perennial herbs and evergreen herbs. According
to the growth habit, the stem can be divided into vertical stem and rattan stem. The
latter can be divided into twining stems, climbing stems and stolons. The perversion
of the stem: there are two types of stem metamorphosis, aerial stem and underground
stem metamorphosis. Among them, the metamorphosis of aerial stem can be divided
into leafy stem, spiny stem, hook stem, stem tendrils, small tuber and small bulb. The
metamorphosis of underground stem can be divided into root stem, tuber, bulb and
bulb. Branch pattern of stem are divided into uniaxial branch, combined axis branch,
binary branch and pseudo-binary branch.
The morphology and size of the leaves are very different, but their components
are basically the same and can be divided into three parts: leaf, petiole and bracket.
Leaves with all three parts, called complete leaves, lacking petioles or stipules are
called incomplete leaves. The morphology of leaves is manifested in the whole
shape of leaves, leaf apex, phyllopodium, leaf margin, leaf vein, texture and surface
appendages. Leaf morphology: aciculiform, strip-shaped, lanceolate, oblanceolate,
rectangular circle, ellipse, oval, obovate, circular, cordate, obcordate, cochlear, fanshaped, reniform, panduriform, rhomboid, cuneate, triangular, scaly, shield-shaped,
arrow shape, Euphorbia pulcherrima, tubular, etc.
The composition of flowers consists of pedicels, receptacles, calyx, corolla, stamens and pistil groups. Flowers with calyx, corolla, stamens and pistil, called complete flowers, lack part or parts of flowers called incomplete flowers. According to
the presence or absence of calyx and corolla, flowers can be divided into Multiple
perianth, Single perianth, no perianth and multiplicate flower. According to the presence and distribution of stamens and pistil, flowers are divided into bisexual flowers,
unisexual flowers and asexual flowers. Corolla also has a variety of colors, including
white, red, purple, yellow and so on. Inflorescence is divided into infinite inflorescence and limited inflorescence. Infinite inflorescences are divided into racemes,
spikes, catkin, spadix, corymb, capitulum and hypanthium. Limited inflorescences
can be divided into single inflorescences, dichotomous cymes, polydichotomous
cymes and cymes.