Shiitake mushroom named ‘Chikumasshu CS-2’

Abstract

A new variety of shiitake mushroom that has a medium density, late growth according to temperature, an overall scaled cap, an average length of time from spawning to fruiting, and high yield at second and third month.

Claims

1. A new and distinct variety of shiitake mushroom as described and illustrated.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the accompanying drawings, which are as nearly true as is reasonable possible to make in a color illustration of this type:

(2) FIG. 1 is a color photograph showing a top surface of a fruiting body of ‘Chikumasshu CS-2’;

(3) FIG. 2 is a color photograph showing a bottom surface and stem of a fruiting body of ‘Chikumasshu CS-2’;

(4) FIG. 3 is a color photograph showing top surfaces of a group of five fruiting bodies of ‘Chikumasshu CS-2’;

(5) FIG. 4 is a color photograph showing culturing beds of ‘Chikumasshu CS-2’;

(6) FIG. 5 is a color photograph showing fruiting bodies on culturing beds of ‘Chikumasshu CS-2’;

(7) FIG. 6 is a color photographs showing top surfaces of fruiting bodies of ‘XR18’, ‘Chikumasshu CS-2’ and ‘KX-S055’, respectively, for comparison;

(8) FIG. 7 is a color photographs showing bottom surfaces and stems of fruiting bodies of ‘XR18’, ‘Chikumasshu CS-2’ and ‘KX-S055’, respectively, for comparison;

(9) FIG. 8 is a color photographs showing side views of fruiting bodies with stems of ‘XR18’, ‘Chikumasshu CS-2’ and ‘KX-S055’, respectively, for comparison;

(10) FIG. 9 is a color photographs showing side views in cross-section of fruiting bodies with stems of ‘XR18’, ‘Chikumasshu CS-2’ and ‘KX-S055’, respectively, for comparison.

(11) Due to chemical and/or digital development, processing and printing, the plants or portions of plants depicted in the photographs may or may not be precisely accurate, when compared to the actual botanical specimens.

DETAILED DESCRIPTION OF THE INVENTION

(12) The botanical description and the photographs are of the ‘Chikumasshu CS-2’ plants within a month of age (and the same for the comparative plants XR18 and KX-S055). The plants were grown between July 2013 and July 2014 in our facilities at 1400-1, Senbonyanagi, Chikuma-shi, Nagano, Japan, and at 7, Aza Naraibansan, Shimoayashi, Aoba-ku, Sendai-shi, Miyagi, Japan.

(13) Colors are given according to The R.H.S. Color Chart, Sixth Edition (2015). Botanical description: Antagonistic reaction.—Present (aversion line on saw-dust medium or PDA). Tunic of hyphae.—Present. Aerial hyphae.—Few. Density of hyphae.—Medium. Color of hyphae.—Colorless. Optimum temperature for mycelial growth.—27° C. Temperature of mycelial growth.—5° C. Slow (about 0.2 mm). 10° C. Slow (about 0.2 mm). 15° C. Slow (about 0.2 mm). 20° C. Slow (about 0.2 mm). 25° C. Slow (about 0.2 mm). 30° C. Slow (about 0.2 mm). Shape of top view.—Round. Shape of vertical cross-section.—Convex top surface. Flesh type.—Flat bottom surface. Diameter of cap (natural cultivation).—Medium (about 70 to 80 mm). Diameter of cap (unfavorable conditions).—Medium (about 55 to 66 mm) (unfavorable places and periods of cultivation). Color of cap top view.—Yellowish brown (RHS 172A). Thickness of cap (natural cultivation).—Medium (about 13 to 16 mm). Thickness of cap (unfavorable conditions).—Medium (about 12 to 15 mm) (unfavorable places and periods of cultivation). Hardness of cap.—Medium. Arrangement of scales on cap.—Overall. Size of scales.—Medium (about 59-63 mm). Color of scales.—Yellowish-brown (RHS 172A). Gills in cap.—Present. Arrangement of gills.—Ripple. Shape of hymenophore.—Wavy. Arrangement of hymenophore.—Wavy. Width of hymenophore.—Very narrow (below about 4 mm). Density of hymenophore.—Crowded. Color of hymenophore.—Cream (RHS N155A). Shape of stipe.—Bulbous base. Length of stipe.—Medium (about 47 to 54 mm). Ratio cap diameter/stipe length.—Medium to large (about 3.2 to 5.6). Thickness of stipe.—Thin (about 19 to 22 mm). Ratio cap diameter/stipe thickness.—Very large (above about 5.6). Color of stipe surface.—Pale yellow-green (RHS 155A). Color of stipe hair.—Light yellow-brown (RHS 158D). Hair.—Present. Hardness of stipe.—Hard. Tinting of stipe.—Present. Number of days from spawning to fruiting.—About 100-110 days. Harvest period after fruiting treatment.—About 6-8 days. Type of fruiting.—Concentrated. Soaking yield.—Fitness. Water temperature.—Medium (about 15 to 20° C.). Method of secondary fruiting.—Soaking. Fruiting temperature.—Medium (about 15 to 20° C.). Adaptability of culture medium.—Broad-leaf sawdust. Ratio of dry weight fruit body.—About 10-15%. Average weight of dry fruit body.—About 1.5-2 g. Yield per 100 kg sawdust medium.—Small (about 3.3 to 4.0 kg). Ratio of yield per year.—1.sup.st year: Over 50%. 2.sup.nd year: About 20-30%. 3.sup.rd year: About 10-20%. 4.sup.th year: Under 10%.