Noor hard red spring wheat

Noor hard red spring wheat (Triticum aestivum L.) was developed using a modified bulk breeding method at the University of Alberta, Edmonton, Canada. Noor is an apically awnletted, hollow-stemmed line with a combination of high yield potential, good lodging tolerance, and medium maturity. During the three years (2016-18) of evaluation in the Parkland Wheat Cooperative test, Noor yielded 12% higher than the mean of all checks, and matured similarly to Carberry and Glenn but 3.1 and 2.6 days later than AC Splendor and Parata, respectively. Noor was 94.9 cm tall, shorter than AC Splendor (98.4cm), similar in height to Glenn (94.0cm) and Parata (93.5cm) but taller than Carberry (86.0 cm). The lodging score of Noor (2.1) was lower than Parata (3.0) and AC Splendor (3.0) but similar to Carberry (2.3) and Glenn (2.1). The test weight (kg hL-1) of Noor (80.0) was higher than AC Splendor (78.6), similar to Carberry (80.2) and Parata (80.4) but lower than Glenn (82.2). Grain weight (35 g) and NIR Protein of Noor (14.1%) was lower than all checks. Overall, Noor was rated resistant (R) to the prevalent races of leaf, stem and stripe rusts during the three years of testing. Noor was rated Intermediate (I) to common bunt and Fusarium head blight. Three years of end-use quality evaluation indicated that Noor is acceptable for the Canada Western Red Spring class, with fewer flags.

Jake hard red spring wheat

Jake hard red spring wheat (Triticum aestivum L.) was developed using a modified bulk breeding method at the University of Alberta, Edmonton, AB. Jake is an awned, hollow-stemmed line with high yield potential, medium tall plants, and medium maturity. During the three years (2015–2017) of evaluation in the Parkland Wheat Cooperative test, Jake yielded 6% higher than the mean of all of the checks, and matured 0.7 and 1.7 d later than Parata and Splendor but 2.9 d earlier than Glenn. Jake was 91.2 cm tall, shorter than AC Splendor (95.8 cm), but similar in height to Glenn (91.8 cm) and Parata (92 cm). The lodging score of Jake (2.2) was lower than Parata (3.1) and AC Splendor (3.1), but similar to Glenn. The test weight of Jake (80.8) was higher than AC Splendor (78.3), similar to Parata (80.5), but lower than Glenn (82.5). The grain weight of Jake (35.6 g) was similar to Parata (35.6 g), but lower than Glenn (36.7 g) and AC Splendor (37.4 g), while the NIR Protein of Jake (15.9%) was higher than Glenn (15.5%) and similar to the other checks. Jake was moderately resistant to resistant to leaf, stem, and stripe rusts, and moderately resistant to common bunt during the 3 yr of testing. The reaction of Jake to Fusarium head blight was variable and ranged from moderately susceptible to moderately resistant, with DON values similar to Carberry and Glenn. Three years of end-use quality evaluation has indicated that Jake is acceptable for the CWRS class.

Genetic inheritance of photoperiod sensitivity in Runner bean (Phaseolus coccineous L.)

Lack of information on the mode of inheritance of photoperiod sensitivity is a constraint to genetic improvement of tropically adapted vegetable runner bean. This study was conducted to determine the inheritance of short-day photoperiod in runner beans. Seven single crosses between female parent; White Emergo (long day imported variety) and seven short day local landraces (Kin 1, Kin 2, Kin 3, Nyeri, Dwarf1, Dwarf 2 and Dwarf 3) were developed in Kenya. The parents, F1, F2 and backcrosses were evaluated at Kabete (warm conditions) and Ol Joro-Orok (cool condtions) under the natural short-day length of 12hrs. From the results, short day parents flowered earlier (within 40-48 days) and formed more racemes (on average 10 racemes/plant) and pods (at least 25pods/plant) than long day parent (White Emergo) at both locations. The populations in the seven cross combinations flowered earlier at the warmer location (Kabete) than cooler one (Ol Joro Orok). In all crosses, F1 and F2 means of days to flowering and number of racemes were within parental range while the backcrosses’ showed means that were close to their recurrent parents. The additive-dominance model [m+a+d] was found to adequately explain the genetic influence on studied traits with additive gene effects accounting for about 90% of the genetic action. The predominance of additive gene action indicates that improvement of this crop for short day adaptation can be easily achieved by trait integration through hybridization followed by pure selection methods such as single seed descent, bulk breeding or pedigree.

Zealand hard red spring wheat

Zealand hard red spring wheat (Triticum aestivum L.) was developed using a modified bulk breeding method at the University of Alberta in Edmonton, AB. Zealand is an apically awn-letted, hollow-stemmed cultivar with a combination of high yield potential, tall plant type, large leaves, and early maturity. In three years of testing in the Western Bread Wheat Cooperative Registration Test during 2013–2015, Zealand exhibited grain yield similar to Glenn and Carberry and 5%–6% lower than Unity and AAC Viewfield, though this difference was not significant (p > 0.05). Zealand yielded 37% greater than the highest-yielding Canada Western Red Spring (CWRS) check, CDC Osler, in A-level testing at a certified organic farm. Zealand matured 1–4 d earlier and was taller than all the check cultivars, but exhibited lodging resistance better than Unity and similar to the other checks. The test weight of Zealand (79.1 kg hL−1) was lower than Glenn and similar to the other checks, while its seed mass was in the range of the check cultivars. Overall, Zealand was rated as resistant (R) to the prevalent races of leaf rust, moderately resistant (MR) to stripe rust and loose smut, intermediate (I) to stem rust and leaf spot, and moderately susceptible (MS) to common bunt and Fusarium head blight. Three years of end-use quality evaluation indicated that Zealand is acceptable for the CWRS class, with relatively few weaknesses. The tall plant type, large leaves, and early maturity render Zealand suitable for organic/high weed environments.

Hubungan Antara Hasil dan Komponen Hasil Wijen (Sesamum indicum L.) pada Generasi F1 dan F2 Persilangan Sbr2, Sbr3, dan Dt36

<p>Dalam program pemuliaan tanaman wijen, informasi keragaman genetik dan hubungan antarsifat sangat penting untuk menentukan keberhasilan seleksi. Penelitian yang bertujuan untuk mempelajari keragaman genetik dan hubungan antara komponen hasil dan hasil wijen pada generasi F1 dan F2 persilangan Sbr 2, Sbr 3, dan Dt 36 telah dilaksanakan dari bulan November 2012 sampai dengan Februari 2013 di Padangan, Sitimulyo, Piyungan, Bantul, Yogyakarta. Penelitian menggunakan rancangan acak lengkap (RAL) dengan tiga ulangan. Bahan tanam yang digunakan adalah benih tetua, F1, dan F2 hasil persilangan antara Sbr 3 x Sbr 2, Sbr 3 x Dt 36, Sbr 2 x Dt 36, dan resiproknya. Benih bulk hasil persilangan ditanam secara rapat dalam baris pada petak-petak yang berukuran 4 x 1 m. Pengamatan dilakukan pada parameter tinggi tanaman, jumlah cabang, jumlah polong, berat polong, berat biji, jumlah ruas, panjang ruas, umur berbunga, umur panen, dan berat 1.000 biji. Hasil penelitian menunjukkan bahwa komponen hasil yang memiliki keragaman genetik besar adalah berat biji per tanaman (68,437%), berat polong (40,532%), jumlah cabang (33,251%), jumlah polong (30,269%), dan tinggi tanaman (21,256%). Nilai heritabilitas yang tinggi terdapat pada tinggi tanaman (65,52%) dan umur panen (55%). Komponen hasil yang memiliki korelasi nyata terhadap hasil<br />adalah jumlah cabang, jumlah polong, berat polong, dan umur berbunga, sedangkan yang berpengaruh langsung terhadap hasil wijen adalah jumlah cabang dan berat polong.</p><p> </p><p>In sesame breeding program, information about genetic variations and relationships ammongs characters is very important to determine the success of line selection. Studies about correlation between yield and yield<br />components of F1 and F2 from crosses of Sbr 2, Sbr 3, and Dt 36 was conducted on November 2012 to February 2013 in Padangan, Sitimulyo, Piyungan, Bantul, Yogyakarta. The treatments were arranged in complete<br />random design (CRD) with three replications. Planting materials used were the seed of parents, F1, and F2 from crossing between Sbr 3 x Sbr 2, Sbr 3 x Dt 36, Sbr 2 x Dt 36, and their reciprocals. Bulk breeding seeds planted in rows in high density to reach maximum populations as the genetic resource in the plots according to its genotypes. The observation was made on plant height, number of branches, number of pods, weight of pods, number of nodes, nodes length, day of flowering, plant maturing age, and 1,000<br />seed weight. The results showed that, components which showed high genetic variation were weight of seeds per plant (68.437%), weight of pods (40.532%), the number of branches (33.251%), number of pods<br />(30.269%), and plant height (21.256%). High heritability values was shown in parameters of plant height (65.52%) and plant maturing age (55%). Yield components which have significant correlation with the yield were number of branches, number of pods, pod weight, and days to flowering, while those have a direct effect on the yield of sesame are the number of branches and pods weight.</p>

Influence of parental germplasm for fruit characters in F1, F2 and F3 generations of pepper (Capsicum annuum L.)

The aim of this research was to determine genetic values for the fruit width and fruit length in F1 and F2 generation of diallely crossed pepper genotypes, and to evaluate the effects of applying the pedigree and bulk breeding method for producing F3 hybrid populations. Hybrid populations were formed by crossing divergent genotypes belonging to different varieties of species Capsicum annuum L. The research of parental lines lasted for three years, experiments with F1 generation two years, while the analysis of results for F3 hybrid population has been done regarding the data from one year experiment. The heterosis effect in F1 generation for all researched traits and in all crossing combinations was very low. Genetic analysis of F2 generation showed that all researched traits were inherited with partial domination. In F3 generation, hybrid populations formed by using the pedigree method of selection had traits which are more valuable for further breeding than the hybrid population formed by using modified bulk method.

Effectiveness of Stratified Mass Selection for Yield in Intrasubspecific and Intersubspecific Crosses of Peanut1

Methods of broadening the genetic base of the peanut (Arachis hypogaea L.) generally involve crosses of exotic germplasm with locally adapted cultivars. Broadening the genetic base effectively requires the evaluation of a large number of crosses and lines within crosses. Mass selection within a cross in early generation, as opposed to single seed descent or bulk breeding methods, eliminates many undesirable segregates from crosses of exotic with adapted germplasm. In this study five plant introductions, representing different levels of diversity, were crossed with an adapted Virginia (ssp. hypogaea var. hypogaea) breeding line. Twelve high and 12 low yielding plants in the F2 generation of each cross were selected with a high and low selection being made from among 10 plants grown in sixteen 12-plant rows. The selected material was increased and evaluated in F4 generation yield trials at two locations. Stratified mass selection for higher seed yield was effective for both intersubspecific crosses but was only effective for one of the three intrasubspecific crosses. Confounding effects of meat content with seed yield and the small number of F2 plants evaluated may be partially responsible for the lack of effective selection for two of the intrasubspecific crosses. Selection for higher seed yield separated the F2 plants into two groups for meat content with the selections for high seed yield having higher meat content. However, the high and low selections, when evaluated in the F4 generation, were not different for meat content except for one intrasubspecific cross.