The Dolichos bean variety “IIHR/12” you asked about — but as of the latest available official varietal records, there’s no widely published variety by the specific name “IIHR/12” in horticultural release lists or seed catalogues from IIHR (Indian Institute of Horticultural Research), Bengaluru on major agricultural portals or seed certification registries (e.g., seednet.gov.in, DUS registration lists). If IIHR/12 is an internal germplasm line or breeding line, then:

1. Dolichos/Hyacinth (Lablab) 

• Dolichos bean (botanical name Lablab purpureus (syn. Dolichos lablab) is a pole‑type legume vegetable widely cultivated in India and other tropical regions for its tender green pods and seeds as food.
• It belongs to the Fabaceae family and is valued for protein, vitamins, minerals, fiber, and adaptability to warm climates.

2. IIHR Germplasm and Breeding Lines

• At research stations like IIHR, collections of Dolichos bean germplasm are evaluated for traits such as days to flowering, pod length, pod width, pod yield, color, etc. These accessions are usually numbered (e.g., IIHR‑6, IIHR‑150, IIHR‑159).
• Such numbered lines are genetic selections from germplasm evaluation rather than officially released, named cultivars.

3. General Traits Observed in IIHR Dolichos Germplasm

While the specific data on “IIHR/12” isn’t in public release lists, research with IIHR accession lines shows typical ranges of traits used in selection:

Growth & Maturity

• Pole (climbing) growth habit — requires staking/support.
• Flowering and maturity vary among lines — early lines flower ~43–55 days after sowing; maturity is also variable.

Pods & Yield

• Pod length: often up to 15 – 16.5 cm in promising lines.
• Pod width and ten‑pod weight vary widely among lines.
• Pod color can be green, light‑green, purple, or creamy‑white in different accessions.

Yield Potential

• Among evaluated accessions, some lines show high pod yield per plant — e.g., >500 g per plant under research conditions.

4. What “IIHR/12” Might Be

• If IIHR/12 refers to a germplasm or breeding line used within IIHR research, its key description traits would be similar in nature — i.e., a pole‑type Lablab bean characterized for:

  • Days to flowering and maturity

  • Pod length and width
  • Pod color and smoothness
  • Tender pod yield
  • Possible photo‑sensitivity or insensitivity(not unlike the accession lines evaluated in IIHR studies)

5. How Formal Varieties Are Released

• For an improved line to be an official released variety, it must go through Distinction, Uniformity & Stability (DUS) testing and notification in government registries — like through Plant Authority/Variety Release systems. Current notified varieties are listed by Seednet.gov.in and similar portals; “IIHR/12” does not currently appear on these lists.