Table 3 The comparison of the ncSSR genotype groups (A, B, C, D) of somatic hybrids with parent Sblb66 in characteristics showing significant somaclonal variation (P < 0.05).

Characteristics	Genotype
Characteristics	Sblb66	A	B	C	D
Morphological descriptors
Uprightness of the stem	9.0^b	5.0^ab	3.0^a	4.9^ab	5.0^ab
Stem thickness	4.4^a	6.0^ab	6.25^ab	6.1^ab	6.50^b
Crown diameter	1.2^a	4.0^ab	5.75^ab	5.2^ab	7.58^b
Manifestation of inflorescence	3.4^a	6.5^ab	7.63^ab	6.8^ab	8.17^b
Tuber shape	9.0^b	5.5^a	5.25^a	6.0^ab	5.83^a
Color of the flesh	7.0^b	4.5^a	6.50^ab	5.0^ab	4.67^a
Yield properties
Number of tubers per plot	40.0^b	160.75^a	115.57^a	139.91^a	135.0^a
Weight of tubers per plot (kg)	0.05^a	4.55^cd	2.29^b	5.71^d	2.38^bc
Number of tubers over 3 cm per plot	NA	80.00^ab	54.14^a	90.46^b	57.50^ab
Weight of tubers over 3 cm per plot (kg)	NA	3.55^ab	1.73^a	5.20^b	1.70^a
Content of glycoalkaloids in dry matter
Chaconine in tubers (mg kg⁻¹)	18.80^a	481.10^b	549.68^b	478.06^b	594.63^b
Solanine in tubers (mg kg⁻¹)	15.15^a	490.44^b	560.43^b	512.46^b	524.03^b
Total glycoalkaloids in tubers (mg kg⁻¹)	33.95^a	971.54^b	1110.11^b	990.52^b	1118.65^b
Chaconine in foliage (mg kg⁻¹)	35.45^a	1022.09^bc	567.37^ab	1161.08^c	2694.67^d
Solanine in foliage (mg kg⁻¹)	23.75^a	288.57^bc	161.99^ab	276.72^c	784.30^d
Total glycoalkaloids in foliage (mg kg⁻¹)	59.20^a	1310.67^bc	729.37^ab	1437.79^c	3478.97^d

Footnotes (a, b… etc.) indicate placement of mean values into homogeneous groups.

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