ﺗﺎﺛﯿﺮ اﻧﺪازه ﺑﺬر ﺑﺮ ﺑﺮﺧﯽ ﺷﺎﺧﺼﻪ ﻫﺎي ﺟﻮاﻧﻪ زﻧﯽ ژﻧﻮﺗﯿﭗ ﻫﺎي ﯾﻮﻻف زراﻋﯽ

Effect of seed size of some germination indices of Oat (Avena sativa L.)Genotypes

ﯾﻮﻻف ﯾﮑﯽ از ﻣﻬﻤﺘﺮﯾﻦ ﻋﻠﻮﻓﻪﻫﺎي ﻣﺘﺮاﮐﻢ ﻣﯽﺑﺎﺷﺪ ﮐﻪ در ﺗﻐﺬﯾﻪ دام ﺑﻪ ﺻﻮرﺗﻬﺎي ﻣﺨﺘﻠﻒ ﺑﻪ ﻣﺼﺮف ﻣﯽرﺳﺪ. ﯾﻮﻻف را ﻣﯽﺗﻮان ﺑﻪ ﺗﻨﻬﺎﯾﯽ ﯾﺎ ﺑﻪ ﺻﻮرت ﻣﺨﻠﻮط ﺑﺎ ﺑﻘﻮﻻت ﯾﮑﺴﺎﻟﻪ ﺑﺮاي ﺗﻬﯿﻪ ﻋﻠﻮﻓﻪ ﺳﺒﺰ ﯾﺎ ﺧﺸﮏ ﮐﺸﺖ ﻧﻤﻮد ﮐﻪ ﻏﯿﺮ ﯾﮑﻨﻮاﺧﺘﯽ در رﺳﯿﺪﮔﯽ ﻧﺎﺷﯽ از اﻧﺪازه ﺑﺬر ﻣﯽﺗﻮاﻧﺪ ﺑﺎﻋﺚ ﮐﺎﻫﺶ ﻋﻤﻠﮑﺮد ﮐﻤﯽ و ﮐﯿﻔﯽ داﻧﻪ و ﻋﻠﻮﻓﻪ ﺷﻮد. ﺑﻪ ﻣﻨﻈﻮر ارزﯾﺎﺑﯽ ﺗﺄﺛﯿﺮ اﻧﺪازه ﺑﺬر ﺑﺮ ﺷﺎﺧﺼﻪ ﻫﺎي ﺟﻮاﻧﻪ زﻧﯽ ﺑﺮﺧﯽ ارﻗﺎم ﯾﻮﻻف زراﻋﯽ ، آزﻣﺎﯾﺸﯽ ﺑﺼﻮرت ﻓﺎﮐﺘﻮرﯾﻞ در ﻗﺎﻟﺐ ﻃﺮح ﮐﺎﻣﻼً ﺗﺼﺎدﻓﯽ در ﺳﻪ ﺗﮑﺮار اﻧﺠﺎم ﺷﺪ. ﺳﻪ ژﻧﻮﺗﯿﭗ ﯾﻮﻻف زراﻋﯽ ﺷﺎﻣﻞG4، G3 وG5ﺑﻪ ﻋﻨﻮان ﻓﺎﮐﺘﻮر اول و ﺳﻪ اﻧﺪازه ﺑﺬر ﺷﺎﻣﻞ ﮐﻮﭼﮏ )8-10ﻣﯿﻠﯿﻤﺘﺮ(،ﻣﺘﻮﺳﻂ )10-12ﻣﯿﻠﯿﻤﺘﺮ(و ﺑﺰرگ )12-14ﻣﯿﻠﯿﻤﺘﺮ(ﺑﻪ ﻋﻨﻮان ﻓﺎﮐﺘﻮر دوم در ﻧﻈﺮ ﮔﺮﻓﺘﻪ ﺷﺪ. ﺑﺮ اﺳﺎس ﻧﺘﺎﯾﺞ آزﻣﺎﯾﺶ،ﺑﯿﻦ ارﻗﺎم از ﻧﻈﺮ درﺻﺪ ﺟﻮاﻧﻪ زﻧﯽ و ﻣﺪت ﺟﻮاﻧﻪ زﻧﯽ ﺗﻔﺎوت ﻣﻌﻨﯽ دار وﺟﻮد ﻧﺪاﺷﺖ.اﻣﺎ در ﺳﺮﻋﺖ ﺟﻮاﻧﻪ زﻧﯽ ﺑﯿﻦ رﻗﻢ G4ﺑﺎG3 و G5 اﺧﺘﻼف ﻣﻌﻨﯽ داري ﺑﻮد و ﺳﺮﻋﺖ ﺟﻮاﻧﻪ زﻧﯽ در اﻧﺪازه ﮐﻮﭼﮏ و ﻣﺘﻮﺳﻂ رﻗﻢ G4 ﺑﯿﺸﺘﺮ از ﺳﺎﯾﺮ ارﻗﺎم ﺑﻮد.ﮐﻤﺘﺮﯾﻦ ﺳﺮﻋﺖ ﺟﻮاﻧﻪ زﻧﯽ ﻧﯿﺰ ﻣﺮﺑﻮط ﺑﻪ اﻧﺪازه ﺑﺰرگ ﺑﺬررﻗﻢ G5 ﺑﻮد. ﺳﻪ اﻧﺪازه ﺑﺬر در درﺻﺪ ﺟﻮاﻧﻪ زﻧﯽ و ﻣﺪت ﺟﻮاﻧﻪ زﻧﯽ ﺑﺎ ﻫﻢ اﺧﺘﻼف ﻣﻌﻨﯽ داري ﻧﺪاﺷﺘﻨﺪ.

Oats are one of the most important dense forage used in various forms of animal feed. Oats can be cultivated alone or in combination with annual legumes to produce green or dry forage, which may reduce the uniformity of seed size due to quantitative and qualitative yield of grain and forage.In order to evaluate the effect of seed size on germination characteristics of some Oat (Avena sativa L.)Genotype. A factorial experiment was conducted in a completely randomized design with three replication. Genotypes included G3, G4 and G5 considered as the first factor and three size of seed included small (8-10) mm, medium (10-12)mm and large (12-14)mm considered as the second factor.In this experiment, traits such as germination percentage and germinationtime weren'tsignificant,but germination rate wassignificant in G4. G4 had the most of germination rate.Least germination rate was observed inlargesize of G5 genotype. Germination percentage and germination timein three allsize weren'tsignificant.