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تولید انبوه و ارزیابی عملکرد رویشی نهالهای بذری صنوبر دلتوئیدس (.Populus deltoides Marsh) و اورامریکن (P. euramericana (Dode)) | ||
| تحقیقات جنگل و صنوبر ایران | ||
| دوره 28، شماره 3 - شماره پیاپی 81، مهر 1399، صفحه 283-295 اصل مقاله (567.52 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2020.351167.1942 | ||
| نویسندگان | ||
| فرهاد اسدی* 1؛ سید احسان ساداتی2 | ||
| 1دانشیار، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان مازندران، سازمان تحقیقات، آموزش و ترویج کشاورزی، ساری، ایران | ||
| 2استادیار، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان مازندران، سازمان تحقیقات، آموزش و ترویج کشاورزی، ساری، ایران | ||
| چکیده | ||
| پژوهش پیش‌رو با هدف تولید انبوه نهالهای بذری صنوبر دلتوئیدس (Populus deltoides Marsh.) و اورامریکن (P. euramericana (Dode)) و بررسی عملکرد رویشی نهالهای تولیدشده انجام شد. در مرحله اول پژوهش، بذرهای جمع‌آوری‌شده از کلکسیون صنوبر ایستگاه تحقیقات جنگل و مرتع چمستان در دو تیمار خاک خالص مزرعه و خاک مخلوط با ماسه و سه تراکم بذر در سه تکرار کاشته شدند. سپس، تعداد، ابعاد و برخی ویژگی‌های ریخت‌شناسی نهالهای تولیدشده بررسی شد. در مرحله دوم پژوهش، 12 ژنوتیپ از نتاج هریک از دو گونه موردنظر انتخاب شد. از آن‌ها، قلمه کافی تهیه شد و به‌همراه قلمه‌های درختان مادری در سه تکرار کاشته شدند. ویژگی‌های رویشی آن‌ها نیز آماربرداری و تجزیه‌وتحلیل شد. نتایج مرحله اول نشان داد که دامنه تغییرات ویژگی‌های قطر، ارتفاع، تعداد برگ، طول دم‌برگ، درصد زنده‌مانی و درصد نهالهای بلندتر از یک متر در نهالهای بذری p . euramericana 92/40 به‌طور معنی‌داری بیشتر از نهالهای بذری P. deltoides 69/55 بود. از نظر قطر، ارتفاع و درصد نهالهای بلندتر از یک متر، خاک خالص مزرعه به‌طور معنی‌داری بر خاک مخلوط برتری داشت. زنده‌مانی برای تراکم‌های 50، 100 و 200 بذر در متر مربع به‌ترتیب 32/8، 19/8 و 10/25درصد به‌دست آمد. نتایج مرحله دوم نشان داد که ارتفاع و قطر پایه‌های مادری کمتر از نتاج بود. ژنوتیپ‌های منتخب این پژوهش شامل ژنوتیپ‌های 10، 12 و دو از نتاج p . deltoides 69/55 و ژنوتیپ سه از نتاج p . euramericana 92/40 هستند که می‌‌توانند برای آزمایش‌های کشت فاصله‌ای، بررسی مقاومت به تنش‌ها و توسعه زراعت چوب به بخش اجرا معرفی شوند. | ||
| کلیدواژه‌ها | ||
| تکثیر جنسی؛ زراعت چوب؛ ویژگی‌های ریخت‌شناسی | ||
| عنوان مقاله [English] | ||
| Mass production and assessment of vegetative yield of Populus deltoides Marsh. and P. euramericana (Dode) seedlings | ||
| نویسندگان [English] | ||
| F. Asadi1؛ S.E. Sadati2 | ||
| 1Associate Prof., Research Division of Natural Resources, Mazandaran Agricultural and Natural Resources Research and Education Center, AREEO, Sari, Iran | ||
| 2Assistant Prof., Research Division of Natural Resources, Mazandaran Agricultural and Natural Resources Research and Education Center, AREEO, Sari, Iran | ||
| چکیده [English] | ||
| The present study was conducted with the aim of mass production of seedlings of Populus deltoides Marsh. and P. euramericana (Dode) and to investigate the vegetative yield of the produced seedlings. In the first phase of the study, the collected seeds from the poplar collection of Chamestan Forest and Rangeland Research Station were sown in two treatments of pure field soil and soil mixed with sand, and three seed densities in three replications. Then, the number, dimensions and some morphological characteristics of the produced seedlings were investigated. In the second phase of the study, 12 genotypes were selected from the offspring of each of the two species. Sufficient cuttings were obtained from them and planted with cuttings of mother trees in three replications. Their vegetative characteristics were also recorded and analyzed. The results of the first stage showed that the range of changes in diameter, height, number of leaves, leaf length, survival percentage and percentage of seedlings longer than one meter in P. euramericana 92/40 seedlings was significantly higher than P. deltoides 69/55 seedlings. In terms of diameter, height and percentage of seedlings higher than one meter, the pure field soil was significantly superior to the mixed soil. Survival for densities of 50, 100 and 200 seeds per square meter was 32.8%, 19.8% and 10.25%, respectively. The results of the second stage showed that the height and diameter of the mother bases were less than the offspring. The selected genotypes of this study include genotypes 10, 12 and 2 from the offspring of P. deltoides 69/55 and genotype three from the offspring of P. euramericana 92/40 which can be introduced to the implementation section for spacing cultivation experiments, stress resistance study and development of wood cultivation. | ||
| کلیدواژه‌ها [English] | ||
| Morphological characteristics, sexual reproduction, wood farming | ||
| مراجع | ||
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