Breeding activities

The breeding objectives of new vegetable arise from the ratio yield/quality and low production input.

Breeding Objectives for Peas

Aside from the basic objective to develop a new variety to serve an appropriate purpose (maturity, sieve size) we have the following breeding objectives in mind:

Increase of yield

  • genetically determined seed quality
  • plant stability
  • plant habit
  • concentration, uniform maturity
  • pods per plant
  • peas per pod
  • pod size
  • pod shape

Quality and processing characteristics

  • sieve size distribution
  • green pea colour
  • nutritional value
  • uniformity of colour (before and after blanching)
  • picking and vining characteristics
  • slow rise of TR
  • low AIS at harvest stage
  • high flavour content
  • tender texture

Ensurance of yield by resistance and adaptation to environment

  • disease resistances against virus, i. e.
    bean yellow mosaic virus,
    pea enation mosaic virus,
    bean leafroll virus,
    pea seed borne mosaic virus
  • disease resistances against funghi, i. e.
    Fusarium wilt – Fusarium oxysporum, various races
    Fusarium root rot – Fusarium solani, Aphanomyces euteiches, Phytium (root rot) etc.
    Leaf diseases as Ascochyta ssp.
    Peronospora pisi
    Erysiphe pisi

Reduced production input (low input)

  • good multiplication rate
  • low chemical plant protection input
  • suitable for various climatic and soil conditions
  • Adaptation to environment (Drought, excessive moisture, erratic changes of soil moisture, low temperatures, frost-tolerance, plant ecology
  • easy harvest

Breeding objectives: Bush beans

Aside from the basic intention to find a new variety for the corresponding market segment (maturity, grade) we obey the following breeding goals:

Increase of yield

  • genetically caused seed quality/emergence capacity
  • healthy, vigorous root system
  • stability
  • plant habit
  • concentrated / uniform green stage maturity
  • pods per plant
  • pod size
  • pod shape

Quality- and processing characteristics

  • pod size distribution
  • pod colour
  • pod flesh/fibre
  • flavour
  • slow seed development / seed indentation
  • stringless
  • homogenity of colour before and after blanching
  • picking quality
  • field stability

Yield assurance / environmental adaption

  • resistance to wind rub
  • tolerance to low germination temperatures
  • heat tolerance
  • Disease resistances against viruses i. e.
    bean common mosaic virus, ( BCMV )
    bean yellow mosaic virus,
  • Disease resistances against funghi i. e.
    Colletotrichum lindmuthianum, various races
    root tot complex – Fusarium solani, Rhizoctonia solani, Phytium spp.etc.
    leaf diseases - Uromyces appendiculatus
    Sclerotinia sclerotiorum ( Sclerotinia ),
  • Disease resistances against bacteria i. e.
    Pseudomonas syringae p.v. phaseolicola (Halo Blight)
    Xanthomonas campestris pv. phaseoli (Common Bacterial Blight)

Low input

  • Good ability to produce variety, good multiplication rate
  • Low plant protection input
  • Tolerance to fluctuation of soil moisture
  • Suitability for growing in different locations with different and variable climatic conditions and plant ecology
  • Good harvesting features.