Baby leaf lettuce germplasm enhancement: Developing diverse populations with resistance to bacterial leaf spot caused by Xanthomonas campestris pv. vitians

Ryan J. Hayes, Mark A. Trent, Beiquan Mou, Ivan Simko, Samantha J. Gebben, Carolee Theresa Bull

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Baby leaf lettuce cultivars with resistance to bacterial leaf spot (BLS) caused by Xanthomonas campestris pv. vitians (Xcv) are needed to reduce crop losses. The objectives of this research were to assess the genetic diversity for BLS resistance in baby leaf lettuce cultivars and to select early generation populations of lettuce with BLS resistance. Greenhouse experiments using artificial Xcv inoculations were conducted to assess BLS resistance in 35 cultivars of 10 lettuce types used in baby leaf production and in F2 through F3:4 progeny from 'Batavia Reine des Glaces' (BLS-resistant, green leaf color)× 'Eruption' (BLS-susceptible, red leaf color). Higher disease severity was identified in red leaf and red romaine cultivars compared with other types, indicating the need to target these types for resistance breeding. Selection for BLS resistance and red-colored leaves was therefore conducted among 486 F2 plants, 38 F2:3 families, and two populations of F3:4 families from 'Batavia Reine des Glaces' × 'Eruption'. Two populations were identified with uniform levels of BLS resistance equivalent to 'Batavia Reine des Glaces' and variable leaf morphology and color. These populations can be used by private and publicly employed lettuce breeders to select for diverse types of lettuce cultivars suitable for baby leaf production and with BLS resistance.

Original languageEnglish (US)
Pages (from-to)18-24
Number of pages7
JournalHortScience
Volume49
Issue number1
StatePublished - Jan 1 2014

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Xanthomonas campestris pv. vitians
leaf spot
leaf lettuce
genetic improvement
lettuce
leaves
cultivars
color
crop losses
greenhouse experimentation
disease severity

All Science Journal Classification (ASJC) codes

  • Horticulture

Cite this

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title = "Baby leaf lettuce germplasm enhancement: Developing diverse populations with resistance to bacterial leaf spot caused by Xanthomonas campestris pv. vitians",
abstract = "Baby leaf lettuce cultivars with resistance to bacterial leaf spot (BLS) caused by Xanthomonas campestris pv. vitians (Xcv) are needed to reduce crop losses. The objectives of this research were to assess the genetic diversity for BLS resistance in baby leaf lettuce cultivars and to select early generation populations of lettuce with BLS resistance. Greenhouse experiments using artificial Xcv inoculations were conducted to assess BLS resistance in 35 cultivars of 10 lettuce types used in baby leaf production and in F2 through F3:4 progeny from 'Batavia Reine des Glaces' (BLS-resistant, green leaf color)× 'Eruption' (BLS-susceptible, red leaf color). Higher disease severity was identified in red leaf and red romaine cultivars compared with other types, indicating the need to target these types for resistance breeding. Selection for BLS resistance and red-colored leaves was therefore conducted among 486 F2 plants, 38 F2:3 families, and two populations of F3:4 families from 'Batavia Reine des Glaces' × 'Eruption'. Two populations were identified with uniform levels of BLS resistance equivalent to 'Batavia Reine des Glaces' and variable leaf morphology and color. These populations can be used by private and publicly employed lettuce breeders to select for diverse types of lettuce cultivars suitable for baby leaf production and with BLS resistance.",
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Baby leaf lettuce germplasm enhancement : Developing diverse populations with resistance to bacterial leaf spot caused by Xanthomonas campestris pv. vitians. / Hayes, Ryan J.; Trent, Mark A.; Mou, Beiquan; Simko, Ivan; Gebben, Samantha J.; Bull, Carolee Theresa.

In: HortScience, Vol. 49, No. 1, 01.01.2014, p. 18-24.

Research output: Contribution to journalArticle

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