The inbred lines and hybrids of maize in present investigation were evaluated under artificial epiphytotic conditions during kharif 2014 and kharif 2015 to identify resistance source and to develop resistant maize hybrids against turcicum leaf blight (Helminthosporium turcicum).
2014) while working with turcicum leaf blight of maize.
In these genotypes, blight development was more or less the same during different periods of observation.
There's an open-pollinated option for blight
resistance, too: vigorous 'Matt's Wild Cherry,' which is often the last heirloom tomato standing in gardens during bad blight
Plants with a susceptible, intermediate, or resistant reaction to both bacterial blights were observed in the Ft of both populations (Table 2).
Despite the fact that gamete selection drastically reduced the population size from the Fl onward such that only two of 147 [F.sub.1] plants gave rise to five breeding lines resistant to both bacterial blights in population ZARA III and only four of 128 [F.sub.1] plants resulted in nine similar breeding lines in ZARA IV, the method was effective in introgressing and pyramiding a higher level of resistance to both bacterial blights from the Andean and Middle American parents that individually possessed a lower level of resistance (Table 1).
Growth habit, seed color, 100-seed weight, and reaction to BCMV, BCMNV, and the common and halo bacterial blights of [F.sub.4]-derived [F.sub.5] dry bean breeding lines selected from two intergene pool four-way crosses ZARA III and ZARA IV and parents evaluated in the greenhouse at Filer and Twin Falls, ID, in 2001 and in the field at Valladolid, Spain, in 2002.
"Ultimately, if we can learn how the late blight pathogen has evolved, we can develop new control measures that could help eradicate future outbreaks," he said.
In recent years, blight has hit crops in Mexico, Ecuador, Ireland, Canada and 23 American states.
With luck, new leaves in spring and summer will replace the blighted
5 (Miklas et al., 2003) sources of common bacterial blight resistance.
XAN 159 was developed for resistance to common bacterial blight at the Centro Internacional Agricultura Tropical (CIAT) by selection from the interspecific cross 'UI 114' pinto/PI 319441//PI 319443 (P.