St. Augustinegrass Germplasm Resistant to &lt;I&gt;Blissus insularis&lt;/I&gt; (Hemiptera: Blissidae)

Youngs, Katharine M.; Milla‐Lewis, Susana R.; Brandenburg, Rick; Cardoza, Yasmin J.

doi:10.1603/ec14044

Cited by 10 publications

(26 citation statements)

References 29 publications

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“…hese results show that NUF-76 is resistant to the southern chinch bug. he resistance has been conirmed later in four additional studies conducted in Florida (Cherry et al, 2011(Cherry et al, , 2012Cherry and Nagata, 2004;Ma et al, 2013) and in North Carolina (Youngs et al, 2014). However, NUF-76 exhibited susceptibility to some biotypes of the southern chinch bug in Texas (Reinert et al, 2011).…”

Section: Southern Chinch Bug Resistancementioning

confidence: 88%

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Registration of ‘NUF-76’ St. Augustinegrass

Nagata

Kenworthy

et al. 2015

Journal of Plant Registrations

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‘NUF‐76’ (Reg. No. CV‐276, PI 674513) St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] was developed from a series of complex crosses and is suitable for use as a turfgrass in lawns in the southern United States. It is resistant to southern chinch bug (Blissus insularis Barber) biotypes in Florida and North Carolina, is the first diploid (2n = 2x = 18) cultivar possessing resistance to the most damaging insect pest of St. Augustinegrass, and is currently the only commercially available resistant St. Augustinegrass cultivar. It is also resistant to certain races of the fungal disease gray leaf spot, caused by Pyricularia grisea, and the planthopper (Liburnia pseudoseminigra Muir & Gifford). NUF‐76 has short fine‐textured leaves relative to other St. Augustinegrasses. NUF‐76 has a significantly slower leaf extension rate compared with ‘Floratam’ and thus requires fewer mowings, reducing maintenance inputs. It produces a dense, high‐quality turfgrass that is similar to or better than Floratam which is the most widely used St. Augustinegrass for lawns in Florida and south Texas.

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Section: Southern Chinch Bug Resistancementioning

confidence: 88%

“…However, FX‐10 was never extensively grown due to several negative characteristics, including a very coarse appearance and texture (Busey, 1993). Since then, breeding efforts have been made to develop new chinch bug–resistant St. Augustinegrass cultivars (Nagata and Cherry, 2003; Youngs et al, 2014).…”

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confidence: 99%

Registration of ‘NUF-76’ St. Augustinegrass

Nagata

Kenworthy

et al. 2015

Journal of Plant Registrations

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“…Nonetheless, a number of PIs within the tested group exhibited damage ratings that were not significantly different from those of the resistant checks. Further evaluation of these materials for neonate development identified nine PIs with low survival and slower development of SCB compared with susceptible checks (Youngs et al, 2014). Four of the genotypes identified as having antibiosis‐based resistance (PI 509038, PI 509039, PI 600734, and PI 647924) are diploid, which facilitates their use for transfer of resistance into commercial cultivars.…”

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confidence: 99%

Tolerance in St. Augustinegrass Germplasm against Blissus insularis Barber (Hemiptera: Blissidae)

et al. 2017

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RESEARCH S t. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] is widely used as a lawn grass in warm, tropical, and subtropical regions of the world (Sauer, 1972). It is a popular choice for lawns in the southern United States due to its aesthetically pleasing appearance and shade tolerance (Busey and Davis, 1991; Trenholm and Nagata, 2005). However, St. Augustinegrass is prone to thatch accumulation (Horn et al., 1973), which is conducive to insect and disease problems (Haygood and Martin, 1990). The southern chinch bug (SCB, Blissus insularis Barber) is the most economically important insect pest of St. Augustinegrass and is found throughout the Gulf States, from Texas to Florida and further north into Georgia and North Carolina (Henry and Froeschner, 1988; Sweet, 2000). Southern chinch bugs have piercing-sucking mouthparts and feed on the phloem of grass plants within meristematic tissues (Painter, 1928). In doing so, SCB deposit their salivary sheaths in the plant tissue at the site of feeding (Backus, 1988). These insects normally reside in the thatch area of the turfgrass stand and prefer to feed on the lower leaf sheaths and crown area of the plant (Anderson et al., 2006). Affected areas turn yellow, then brown, and ultimately die. As the season progresses, these areas can coalesce into large areas or entire lawns of dead grass (Reinert et al., 1995).

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“…Polyploids are documented as having resistance to the southern chinch bug (Reinert et al, 1986; Busey 1990; Busey and Zaenker, 1992), the sting nematode (Busey et al, 1993), gray leaf spot (Atilano and Busey, 1983), and PMV‐SAD (Horn et al, 1973). However, a diploid St. Augustinegrass germplasm with southern chinch bug resistance was recently discovered (Nagata and Cherry, 2003; Youngs et al, 2014). A series of crosses involving 15 diploid genotypes resulted in a diploid hybrid with resistance to southern chinch bug biotypes from the southeastern United States, specific races of Magnaporthe oryzae , and the plant hopper ( Liburbia pseudoseminigra Muir & Gifford).…”

mentioning

confidence: 99%

“…Pembagrass has resistance to gray leaf spot (Atilano and Busey, 1983), the southern cinch bug (Reinert et al, 1986; Busey, 1990; Youngs et al, 2014), and the sting nematode (Busey et al, 1993). Because pembagrass has resistance to these pests, and sometimes more resistance than polyploid St. Augustinegrass genotypes (Busey, 1990), Busey (2003) proposed using interspecific hybridization to transfer resistance from pembagrass to St. Augustinegrass.…”

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confidence: 99%

Interspecific Hybrids between Pembagrass and St. Augustinegrass

Genovesi¹,

Jessup

Burson

et al. 2017

Crop Science

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St. Augustinegrass [Stenotaphrum secundatum (Walt) Kuntze] is an important turfgrass throughout many of the warm, humid regions of the world, including the southeastern United States. Unfortunately, the grass is susceptible to a number of insects, pathogens, and nematodes that adversely reduce its desirability as a turfgrass. Another Stenotaphrum species, pembagrass [S. dimidiatum (L.) Brongn.], offers a source of resistance to some of these pests. Crosses were made between pembagrass and St. Augustinegrass in an attempt to transfer desirable resistance genes into St. Augustinegrass. Two pembagrass accessions (PI 289729 and PI 365031) were used as the maternal parents, and different St. Augustinegrass cultivars and breeding lines were used as the paternal parents. Seed from these crosses were small, shriveled, lacking fully developed endosperm, and unable to germinate. A total of 218 embryos were cultured on a growth medium using embryo rescue techniques, and 127 seedlings were recovered. Paternal‐specific expressed sequence tag‐simple sequence repeat markers were used to identify the hybrids, and all 127 seedlings were determined to be F1 hybrids. These are the first reported hybrids between pembagrass and St. Augustinegrass. The crossability between the two species ranged from 0 to 67.1%, depending on the genotypes used, and the overall mean crossability was 30.8%. Crossability was greatly influenced by which pembagrass genotype was used as the maternal parent. This is an initial step toward introgressing desired genes for insect, nematode, and pathogen resistance from pembagrass into St. Augustinegrass.

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St. Augustinegrass Germplasm Resistant to <I>Blissus insularis</I> (Hemiptera: Blissidae)

Cited by 10 publications

References 29 publications

Registration of ‘NUF-76’ St. Augustinegrass

Registration of ‘NUF-76’ St. Augustinegrass

Tolerance in St. Augustinegrass Germplasm against Blissus insularis Barber (Hemiptera: Blissidae)

Interspecific Hybrids between Pembagrass and St. Augustinegrass

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