diff --git a/src/apiutils.jl b/src/apiutils.jl
index 5a2a1df9..5321ce04 100644
--- a/src/apiutils.jl
+++ b/src/apiutils.jl
@@ -46,6 +46,14 @@ function seed!(duals::AbstractArray{Dual{T,V,N}}, x,
     return duals
 end
 
+function seed!(duals::Array{Dual{T,V,N}}, x,
+               seed::Partials{N,V} = zero(Partials{N,V})) where {T,V,N}
+    @inbounds for i in eachindex(duals)
+        duals[i] = Dual{T,V,N}(x[i], seed)
+    end
+    return duals
+end
+
 function seed!(duals::AbstractArray{Dual{T,V,N}}, x,
                seeds::NTuple{N,Partials{N,V}}) where {T,V,N}
     dual_inds = 1:N
@@ -53,6 +61,14 @@ function seed!(duals::AbstractArray{Dual{T,V,N}}, x,
     return duals
 end
 
+function seed!(duals::Array{Dual{T,V,N}}, x,
+               seeds::NTuple{N,Partials{N,V}}) where {T,V,N}
+    @inbounds for i in 1:N
+        duals[i] = Dual{T,V,N}(x[i], seeds[i])
+    end
+    return duals
+end
+
 function seed!(duals::AbstractArray{Dual{T,V,N}}, x, index,
                seed::Partials{N,V} = zero(Partials{N,V})) where {T,V,N}
     offset = index - 1
@@ -61,6 +77,17 @@ function seed!(duals::AbstractArray{Dual{T,V,N}}, x, index,
     return duals
 end
 
+function seed!(duals::Array{Dual{T,V,N}}, x, index,
+               seed::Partials{N,V} = zero(Partials{N,V})) where {T,V,N}
+    offset = index - 1
+    @inbounds for i in 1:N
+        j = i + offset
+        duals[j] = Dual{T,V,N}(x[j], seed)
+    end
+    return duals
+end
+
+
 function seed!(duals::AbstractArray{Dual{T,V,N}}, x, index,
                seeds::NTuple{N,Partials{N,V}}, chunksize = N) where {T,V,N}
     offset = index - 1
@@ -69,3 +96,14 @@ function seed!(duals::AbstractArray{Dual{T,V,N}}, x, index,
     duals[dual_inds] .= Dual{T,V,N}.(view(x, dual_inds), getindex.(Ref(seeds), seed_inds))
     return duals
 end
+
+
+function seed!(duals::Array{Dual{T,V,N}}, x, index,
+               seeds::NTuple{N,Partials{N,V}}, chunksize = N) where {T,V,N}
+    offset = index - 1
+    @inbounds for i in 1:chunksize
+        j = i + offset
+        duals[j] = Dual{T,V,N}(x[j], seeds[i])
+    end
+    return duals
+end