Inheritance of Resistance to Loose and Covered Smut in Hybrids of Hull‐less With Early Gothland and Monarch Oats

Inheritance of Resistance to Loose and Covered Smut in Hybrids of Black Mesdag with Hull-Less, Silvermine, and Early Champion Oats

“…On the basis of extensive data, 9 distinct races of loose smut and 5 races of covered smut have been differentiated, and not one of these has successfully attacked Black Mesdag (Reed, 1929). It is, however, susceptible to a newly discovered race of covered smut (Reed, 1932C;Reed and Stanton, 1932), and this fact emphasizes the importance of using known races of smut in studies of the inheritance of resistance in oat hybrids.In contrast to Black Mesdag, the Hull-less, Silvermine, and Early Champion varieties are highly susceptible. They have been inoculated with the loose and covered smut and grown along with the hybrids each year, the data being recorded in table I.…”

“…I have previously published data on one cross of Hull-less X Black Mesdag (Hybrid 2) in which the second, third, and fourth generations were inoculated with the loose smut (Reed, 1925). In a later publication the results for the second and third generations of four other crosses of these two varieties (Hybrids 10-13), and also for the second generation of two crosses of Silvermine X Black Mesdag (Hybrids 17 and 18) have been recorded (Reed, 1928).…”

“…I have previously published data on one cross of Hull-less X Black Mesdag (Hybrid 2) in which the second, third, and fourth generations were inoculated with the loose smut (Reed, 1925). In a later publication the results for the second and third generations of four other crosses of these two varieties (Hybrids 10-13), and also for the second generation of two crosses of Silvermine X Black Mesdag (Hybrids 17 and 18) have been recorded (Reed, 1928). Further data on the fourth generation of Hybrid 2, on the second and third generations of Hybrids 10-13, and on the second generation of Hybrids 17 and 18 have been obtained, as well as extensive data on the third and fourth generations of Hybrids 17 and 18, and on the second, third, and fourth generations of Hybrids 33-36, the crosses of Early Champion with Black Mesdag.…”

“…For the sake of completeness, the older data have been incorporated in the tables and summaries in the present account. A brief statement of many of these results has been published (Reed, 1932d), and annual progress reports have been made in the Brooklyn Botanic Garden Record. The methods employed have been fully described elsewhere (Reed, 1932b).…”

“…The data for all the F 3 progenies are summarized in table 2. The results for Hybrids 2, and 10-13, Hull-less X Black Mesdag, have already been published in detail (Reed, 1925(Reed, , 1928. The data for the progenies of Silver- On the basis of the behavior of the third generation progenies, they were classified as resistant, segregating, or susceptible.…”