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Table 3 Maize populations in Mangae, Morogoro, surveyed by SNP analysis

From: Modern maize varieties going local in the semi-arid zone in Tanzania

Seed lot name

Source

Characteristic/color

Number of plants (in final analysis)

Number of polymorphic loci

HO

HE

Staha breeder’s seed

ARI Ilonga

White Flint-Dent

8(8)

95

0.298

0.371

Staha basic seed*

ASA seed farm

White Flint-Dent

8(8)

79

0.314

0.344

Staha commercial

Seed shop

White Flint-Dent

8(7)

100

0.309

0.383

Staha local 1

Farmer in Mangae

White Flint-Dent

8(7)

99

0.298

0.343

Staha local 2

Farmer in Mangae

White Flint-Dent

8(7)

80

0.365

0.373

Staha recycled

Farmer in Mangae

White-Purple

8(8)

77

0.436

0.396

TMV1 breeder’s seed

ARI Ilonga

White Flint

8(7)

88

0.307

0.377

TMV1 basic seed

ASA seed farm

White Flint

8(5)

74

0.401

0.402

TMV1 commercial

Seed shop

White Flint

8(3)

66

0.318

0.489

TMV1 local

Farmer in Mangae

White Flint

8(8)

77

0.339

0.378

Local variety 1

Farmer in Mangae

Red

8(6)

88

0.344

0.371

Local variety 2

Farmer in Mangae

Brown-White

8(6)

47

0.317

0.411

  1. Observed heterozygosity (HO) and expected heterozygosity (gene diversity) (HE) calculated according to Nei (1987) [34].
  2. *The term “Basic” used by the Organization for Economic Cooperation (OECD) is here used instead of the term “Foundation” seeds from the Association of Official Seed Certifying Agency (AOSCA), but the terms are used interchangeably in Tanzania.