D142 Hybrid T.No.34 (D66 x D2)

Overview

D142 is a controlled hybrid durian -- the thirty-fourth selection in the Department of Agriculture's (Jabatan Pertanian) hybridization trial series, produced by crossing D66 (Raja) with D2 (Data Nina). Registered in 1981 from Selangor, it belongs to the same batch of experimental hybrids as D141, D143, and D144, all created under a single institutional breeding program that used D2 as a recurring parent.

Unlike the vast majority of Malaysia's registered durian clones, which were discovered as exceptional trees on private land, D142 was engineered. Its parents were chosen, the pollination was performed under controlled conditions at the DOA's research station -- almost certainly the main facility in Serdang -- and the resulting fruit was evaluated and formally entered into the national registry.

The DOA description records D142 as a medium-large fruit with an elliptic shape, brown thick skin, large thorns, and moderately thick smooth yellow flesh. This is a fruit that combines genetics from two distinct Malaysian durian lineages: the Perak-origin D66 and the Melaka-origin D2, brought together through deliberate scientific crossbreeding.

Origin & History

D142 emerged from the DOA's research infrastructure in Selangor during what appears to have been a structured campaign to explore durian hybridization. The facility in Serdang had long served as the department's hub for germplasm collection and breeding work, and by 1981 the DOA was moving beyond passive documentation of existing varieties into active creation of new ones.

The choice of parents for D142 is revealing. D66, registered under the name "Raja" from Perak, is sometimes referred to as "Durian Raja" or "Durian King." Despite the grand name, D66 is not a commercially prominent variety. It is described as producing small fruit with thin yellow flesh and a bland taste -- not qualities that would make it a market favorite. But breeding programs do not select parents solely for their eating quality. D66 may have offered traits of interest to the DOA -- perhaps disease resistance, tree vigor, or structural characteristics -- that made it worth including in the program despite its unremarkable flesh.

D2 (Data Nina), the other parent, needs less introduction. Registered in 1934 from Melaka, it is one of the two oldest entries in the entire national durian registry. Data Nina is known for its thin shell, thick flesh, complex bittersweet flavor, and orange-yellow coloring. The DOA clearly regarded it as premier breeding stock: D2 appears as a parent in all four hybrids registered from this 1981 program.

The full sibling set from the trial series:

• D141 Hybrid T.No.30 (D101 x D2) -- medium-large, wide elliptic, thin brown shell, thick slightly dry yellow flesh.
• D142 Hybrid T.No.34 (D66 x D2) -- the subject of this profile.
• D143 Hybrid T.No.57 (D2 x D7) -- medium-large, elliptic, brown shell, large thorns, thick slightly dry bright yellow flesh.
• D144 Hybrid 7 (D24 x D2) -- large, ovate, brown shell, yellow-orange flesh with a creamy sweet taste.

The pattern across these four crosses is instructive. D2 contributed consistently to all four, while the other parents -- D101 (Bangkok Tree 16, Thai-origin), D66 (Raja, Perak), D7 (an unnamed 1934 Selangor variety), and D24 (the well-known Sultan) -- represent a deliberate sampling of the available germplasm. The DOA was systematically testing what happened when Data Nina's genetics were combined with a range of different partners.

This 1981 program predates the better-known MARDI hybrid efforts that produced D188, D189, and D190 in 1991, demonstrating that institutional durian breeding in Malaysia was already underway a full decade earlier.

Characteristics

The DOA's official description of D142, while brief, establishes a distinct physical profile:

Size: Medium-large ("bersaiz sederhana besar"). This places D142 in the upper-middle range of durian sizes, a result that is somewhat notable given that D66 is described as producing small fruit. The medium-large dimension likely reflects D2's contribution -- Data Nina is itself a medium-large variety.

Shape: Elliptic ("berbentuk eliptik"). A standard elongated oval form. Unlike its sibling D141, which is described as "wide elliptic," D142 carries the basic elliptic designation without further qualification.

Shell: Brown and thick ("kulit berwarna perang; berkulit tebal"), with large thorns ("berduri besar"). This is where D142 diverges most clearly from its D2 parent. Data Nina is characteristically thin-shelled -- a trait that passed through to D141 (D101 x D2) but did not carry over to D142. The thick shell and large thorns suggest that D66's structural genetics dominated in this cross. Among the four siblings, D142 is the only one explicitly described as thick-shelled, making it the most heavily armored of the group.

Flesh: Moderately thick ("isi sederhana tebal"), with a smooth texture ("bertekstur halus") and yellow coloring ("berwarna kuning"). The "moderately thick" qualifier is a step down from D141's "thick" flesh, suggesting that D66's small-fruit genetics may have limited the flesh volume compared to crosses involving larger-fruited parents like D101 or D24. The smooth texture is notable -- where D141 and D143 both carry "slightly dry" descriptors, D142's flesh is described simply as smooth, which may reflect a creamier mouthfeel closer to D2's own profile.

Flavor and aroma: Not recorded in the DOA description. No taste notes, scent profile, or seed characteristics were documented.

The overall picture is of a fruit that inherited D66's structural robustness (thick shell, large thorns) while gaining size and flesh quality from D2. The smooth yellow flesh, in particular, distinguishes D142 from its drier siblings in the series.

Availability

D142 Hybrid T.No.34 is not available in the commercial durian market. It was registered as an experimental output of the DOA's hybridization program, not as a variety recommended for orchards or consumer sale. No nurseries list D142 saplings, no durian sellers stock it, and no tasting reviews or enthusiast accounts of the variety have been identified in publicly available sources.

The hybrid most likely exists only within the DOA's germplasm collections, possibly at the Serdang research station where it was created. Whether the original trial trees have survived more than four decades of institutional changes, land use shifts, and the general attrition of experimental plantings is unknown.

D142 and its siblings -- D141, D143, and D144 -- represent a body of institutional work that documented the outcomes of controlled durian crosses but never advanced those crosses to the nursery trade. This is not unusual in breeding programs, where the number of experimental selections far exceeds the number that reach commercialization. The four hybrids were registered for scientific documentation and germplasm conservation, preserving a record of what the DOA learned when it paired Data Nina with four different partners under controlled conditions. For anyone studying the genetics of durian breeding or the history of Malaysia's agricultural research institutions, the D141-D144 series remains a quietly significant chapter -- evidence that structured, deliberate durian improvement was happening in Malaysia well before the MARDI hybrids that would later attract wider attention.