VARIETAL NAME: 'P 20'

Taxonomical and basic information

Varietal name:
'P 20'
Identification/ Accession n.:
16
Ingroup:
Morus indica s.l.
Species:
Morus indica
Origin:
Bulgaria
Obtained:
1963

Morphological characteristics

Trunk:
Trunk circumference (cm):
45
Trunk colour:
Greyish brown
Shoots:
Colour of one-year old shoot:
Greyish brown
Lenticel density:
Sparse
Lenticel shape:
Round
Buds:
Bud shape:
Narrow triangular
Bud colour:
Yellowish brown
Bud size:
small
Leaves:
Phyllotaxis:
Opposite decussate
Leaf shape:
Simple
Average leaf size: length (cm):
20.88
Average leaf size: width (cm)
15.02
Leaf size ratio:
Medium (1.3-1.5)
Petiole size (cm):
4.44
Petiole range:
Long (41-70 mm)
Shape of leaf base:
Cordate
Shape of leaf apex:
Acute
Leaf blade tip:
Acuminate
Leaf blade margin:
Crenate
Hairiness:
Glabrous
Glossiness:
Glossy

Reproductive structures

Sexual dimorphisem:
Monoecious
Inflorescence type:
Female
Inflorescence size:
Female infl. length (mm):
5.0
Female infl. diameter (mm):
4.0
Female infl. stalk length (mm):
11.0
Male infl. length (mm):
Male infl. diameter (mm):
Male infl. stalk length (mm):
Polygamous infl. length (mm):
Polygamous infl. diameter (mm):
Polyg. infl. stalk length (mm):
Infructescence:
Fruit weight (g):
1.413
Infructescence length (mm):
18.7
Infructescence width (mm):
11.5
Length of peduncle:
Medium
Infructescence colour:
Reddish black
Taste:
Balanced
Infructescence shape:
Ovoid/globose

Phenological descriptors

Date of bud burst (week):
13
Flowering date (week):
14
Date of infructescence ripening (week):
Medium to late
Uniformity of infructescence ripening:
Medium
Abundant autumn colouring (week):

Growth and yield attributes

Vigour:
Lenght (cm):
136.3
Number of lateral shoots:
26
Lenght of internode (cm):
5.6
Leaf No./meter:
Weight of 100 fresh leaves (g):