Actinidia chinensis Planch.

Kiwi (en), Actinidia (fr), Kiwi (fr), Actinidie de Chine (fr)

Species

Angiosperms > Ericales > Actinidiaceae > Actinidia

Characteristics

Climbing shrubs, large, deciduous. Branchlets reddish, with paler oblong lenticels, young branchlets white pubescent to brownish long strigose or densely ferruginous hispid-setose; pith whitish to brown, large, lamellate. Petiole 3-6(-10) cm, white pubescent or brownish long strigose to densely ferruginous hispid-setose; leaf blade abaxially pale green, adaxially dark green, broadly ovate to broadly obovate or suborbicular, 6-17 × 7-15 cm, papery, abaxially whitish or brownish stellate tomentose, adaxially usually glabrous, occasionally ± puberulent, especially more densely so on midvein and lateral veins, or densely scabrid-hispid throughout, midvein and lateral veins conspicuous abaxially, subconspicuous adaxially, lateral veins 5-8 pairs, furcate above middle, veinlets in parallel cross-bars, conspicuous abaxially, base rounded to truncate to cordatulate, margin setose-serrulate with teeth terminating tips of veinlets, apex truncate to emarginate to abruptly cuspidate or shortly acuminate. Inflorescences cymose, 1-3-flowered, white silky-tomentose or yellowish brown velutinous; peduncles 0.7-1.5 cm; pedicels 0.9-1.5 cm; bracts linear, ca. 1 mm. Flowers orange-yellow. Sepals (3-)5(-7), broadly ovate to oblong-ovate, 6-10 mm, both surfaces densely yellowish tomentose. Petals (3-)5(-8), rarely with a second whorl of 2 smaller petals, broadly obovate, 1-2 cm, shortly clawed at base, rounded at apex. Filaments 5-10 mm; anthers yellow, oblong, 1.5-2 mm, sagittate at base or not, apex acute to rounded. Ovary globose, ca. 5 mm in diam., densely golden villous. Fruit subglobose to cylindric to obovoid or ellipsoidal, 4-6 cm, densely tomentose when young, glabrous when mature to densely hispid, with many brownish lenticels; persistent sepals reflexed. Fl. Apr-May, fr. Sep. 2n = 58*, 116*, 174*.
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A hardy climbing shrub that loses all its leaves at one time. It climbs up to 10 m by twining around its support. The leaves are heart shaped and up to 20 cm long. Male and female flowers are on separate plants. The flowers have a sweet scent. The fruit is up to 8 cm long and 3 cm across and mostly covered with fine hairs. The inside flesh is green. This plant is the parent of Kiwifruit which are now listed as Actinidia deliciosa. The smooth skinned kind is now kept as Actinidia chinensis and the hairy one as Actinidia deliciosa.
For detailed description see Li et al. (2007); for variety occurring in Australia see Flora profile for Actinidia chinensis var. deliciosa (A.Chev.) A.Chev.:   https://profiles.ala.org.au/opus/foa/profile/Actinidia%20chinensis%20var.%20deliciosa
Life form perennial
Growth form shrub
Growth support climber
Foliage retention deciduous
Sexuality dioecy
Pollination entomogamy
Spread -
Mature width (meter) 2.0
Mature height (meter) 7.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a temperate plant. Young shoots and fruit are damaged by frost. Plants have fruited at 1000 m altitude in equatorial regions. It grows naturally in China in thickets and oak forests on slopes or in ravines between 200-2300 metres altitude. It cannot tolerate wet soils. It needs shelter from wind and frost. It has a winter chilling requirement of 500-800 hours below 7°C. Fruit are smaller in shade. In Hobart Botanical gardens. It suits hardiness zones 7-10. In Sichuan and Yunnan.
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Mountain forests, oak forests, sparse secondary forests, tall grassy thickets on low mountains, thickets at lower elevations; growing on slopes and in ravines; at elevations from 200-2,600 metres.
Light 5-8
Soil humidity 3-7
Soil texture 1-6
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 7-9

Usage

The fruit is eaten raw. It can also be used in preserves and cooking. The leaves can be eaten cooked as an emergency food. The fruit is also made into jams and jellies.
Uses food gene source material medicinal ornamental
Edible flowers fruits leaves seeds
Therapeutic use Anti-infective agents (leaf), Antineoplastic agents (root), Antidote (unspecified), Fever (unspecified), Hepatoma (unspecified), Rheumatism (unspecified), Stone (unspecified), Tension (unspecified), Thirst (unspecified), Diuretic (unspecified), Arthralgia (unspecified), Cancer (unspecified), Esophagus (unspecified), Liver (unspecified), Mange(Veterinary) (unspecified), Urogenital (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

It can be grown from seeds or cuttings but often plants of known quality and sex are grafted on. It needs a support to climb over. It needs regular pruning because fruit develop on the current year's growth. Plants or grafted branches of both sexes are needed. Male and female plants must be grown if seed is required. Plants can be grown from seed. Fresh seed germinates in 2-3 months at 10°C and stored seed can take longer. Seedlings should be transplanted out when 30 cm tall and after the last frosts. (Most seedlings are male.)
Mode cuttings graftings seedlings
Germination duration (days) 60 - 90
Germination temperacture (C°) 10
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) 21 - 30
Size -
Vigor -
Productivity -

Images

Actinidia chinensis unspecified picture

Distribution

Actinidia chinensis world distribution map, present in Australia, Bolivia (Plurinational State of), Brazil, China, United States of America, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:828396-1
WFO ID wfo-0000519189
COL ID 64Q3F
BDTFX ID 723
INPN ID 80138
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Actinidia chinensis Actinidia multipetaloides Actinidia chinensis f. jinggangshanensis Actinidia chinensis f. rufopulpa Actinidia chinensis var. jinggangshanensis Actinidia chinensis var. rufopulpa Actinidia chinensis var. latifolia Actinidia chinensis var. chinensis

Lower taxons

Actinidia chinensis var. setosa Actinidia chinensis var. deliciosa