Paper Details

PJB-2002-57

OCCURRENCE OF PERSISTENT INFECTION THREADS IN THE ROOT NODULES OF DALBERGIA SISSOO ROXB.

RAIHA QADRI AND A. MAHMOOD
Abstract

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Root nodules of Dalbergia sissoo Roxb., were globose and present in the axils of lateral roots. Histological studies showed that rhizobia entered the root via root hairs and formed infection threads some of which were branched. The nodule cortex showed a sclereid layer at its periphery. The bacteroid region showed infected and non infected (interstitial) cells intermingled with each other. Persistent infection threads were observed which are being reported for the first time.

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