Seed and seedling characteristics of hybrid chestnuts (Castanea spp.) derived from a backcross blight-resistance breeding program
نویسندگان
چکیده
منابع مشابه
Recovery of American chestnut characteristics following hybridization and backcross breeding to restore blight-ravaged Castanea dentata
Morphological features of leaves and twigs of American chestnut, Chinese chestnut, their F1 hybrid, and three successive generations of backcrosses between hybrid populations and American chestnut were examined to determine rate of recovery of the American chestnut morphology after hybridization to capture Chinese chestnut genes for blight resistance. In aggregate morphology, as measured by a c...
متن کاملBackcross breeding for improved resistance to common bacterial blight in pinto bean (Phaseolus vulgaris
Common bacterial blight (CBB) caused by Xanthomonas campestris pv. phaseoli reduces common bean (Phaseolus vulgaris L.) yield and quality worldwide. Genetic resistance provides effective disease control; however, a high level of resistance is difficult to attain and does not exist in pinto bean, the most important dry bean market class in North America. Our objective was to determine if a backc...
متن کاملInvestigation of Chilling Effects on Characteristics of Seed Germination, Vigor and Seedling Growth of Nepeta spp. Species
To study the effects of chilling on dormancy breaking and the increased germination characteristics of Nepeta (germination percent and speed, seedling length, vigor index, wet and dry weight), a factorial experiment in a completely randomized design with 4 replications was implemented in a laboratory in 2014. Factor A was the chilling treatment in three levels (control, one-month and two-month ...
متن کاملEffects of Temporal Dynamics, Nut Weight and Nut Size on Growth of American Chestnut, Chinese Chestnut and Backcross Generations in a Commercial Nursery
Blight-resistant American chestnut (Castanea dentata) may soon be commercially available, but few studies have tested methods to produce high quality seedlings that will be competitive after planting. This study evaluated the performance of one American, one Chinese (C. mollissima), one second-generation backcross (BC3F2), and 10 third-generation backcross chestnut families (BC3F3). We examine ...
متن کاملBackcross breeding between TGGG hybrid grouper (Epinephelus fuscoguttatus E. lanceolatus) and giant grouper (E. lanceolatus)
This paper reports on the first successful backcross breeding between TGGG hybrid grouper and GG in captivity. To establish a seed production technique for this new backcross grouper, eggs and larval development were observed. Three successful spawning was observed in November 2018, September 2019 and November 2019. The eggs were collected using stripping methods and the sperms were collected u...
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ژورنال
عنوان ژورنال: New Forests
سال: 2019
ISSN: 0169-4286,1573-5095
DOI: 10.1007/s11056-019-09744-7